jakaskerl
 
I routed all the 169.254 subnets to en5.
Routing tables
Internet:
Destination        Gateway            Flags               Netif Expire
default            10.0.0.1           UGScg                 en0
default            link#19            UCSIg                 en5      !
10/16              link#12            UCS                   en0      !
10.0.0.1/32        link#12            UCS                   en0      !
10.0.0.1           b8:69:f4:21:2c:25  UHLWIir               en0   1199
10.0.0.13          a0:a8:cd:55:e6:a0  UHLWI                 en0   1034
10.0.1.30          b4:6d:83:4e:af:ed  UHLWI                 en0    786
10.0.1.139         7c:a7:b0:b1:7b:eb  UHLWI                 en0   1076
10.0.1.147         1a:b7:c8:f9:7:f    UHLWI                 en0    727
10.0.1.213         f0:db:f8:3:90:de   UHLWI                 en0   1097
10.0.2.75          f6:d5:19:e2:a3:d6  UHLWI                 en0    743
10.0.2.93          f2:6d:73:af:8d:d5  UHLWI                 en0   1143
10.0.3.187         6:9e:cc:36:2d:6b   UHLWI                 en0   1190
10.0.4.24          c8:f7:33:f0:41:23  UHLWI                 en0   1198
10.0.4.123         e4:a4:71:ab:16:34  UHLWI                 en0    703
10.0.4.198         fc:77:74:de:88:7a  UHLWI                 en0    777
10.0.5.6           6c:6a:77:da:36:3   UHLWI                 en0   1175
10.0.6.114         88:e8:7f:3:3:7b    UHLWI                 en0    929
10.0.7.18          84:1b:77:10:cd:5e  UHLWI                 en0   1152
10.0.7.55          60:67:20:56:16:84  UHLWI                 en0   1133
10.0.7.202         18:1d:ea:c4:f1:b2  UHLWI                 en0    843
10.0.7.207         4:d3:b0:53:b2:9    UHLWI                 en0   1051
10.0.10.140        24:f6:77:42:a9:62  UHLWI                 en0    996
10.0.11.198        link#12            UHLWI                 en0      !
10.0.13.172        f8:89:d2:ec:35:9   UHLWI                 en0   1160
10.0.14.186        d6:c7:e:75:6b:ae   UHLWI                 en0    932
10.0.16.52         c2:d5:ca:c1:72:99  UHLWI                 en0   1087
10.0.16.154        12:dc:6a:43:67:a5  UHLWI                 en0   1162
10.0.18.191        f4:5c:89:c2:b:55   UHLWI                 en0    756
10.0.23.185        a6:9d:9c:e:96:98   UHLWI                 en0   1095
10.0.31.104        26:18:db:cf:12:f2  UHLWI                 en0    711
10.0.33.60         92:bb:91:fa:f:4d   UHLWI                 en0    653
10.0.36.29         6e:da:4:84:85:93   UHLWI                 en0    710
10.0.36.135        b8:b2:f8:e1:92:c0  UHLWI                 en0    957
10.0.49.13         de:ac:1f:c8:3:24   UHLWI                 en0    647
10.0.53.86/32      link#12            UCS                   en0      !
10.0.56.55         0:45:e2:2d:97:65   UHLWI                 en0    860
10.0.57.136        5a:90:a2:ff:87:4c  UHLWI                 en0    808
10.0.57.252        link#12            UHLWI                 en0      !
10.0.58.96         8e:f7:9e:22:d2:c2  UHLWI                 en0    722
10.0.58.236        52:d1:13:cb:74:b8  UHLWI                 en0   1073
10.0.59.124        16:f2:0:6f:70:d6   UHLWI                 en0    886
10.0.66.229        20:4e:f6:1e:6b:77  UHLWI                 en0    822
10.0.67.148        1a:fd:f3:68:f5:1   UHLWI                 en0    689
10.0.67.162        d6:a5:63:46:3c:7d  UHLWI                 en0    911
10.0.76.27         6:a6:46:d1:3f:36   UHLWI                 en0    794
10.0.79.20         ea:8d:e1:a4:b9:f0  UHLWI                 en0    887
10.0.79.216        82:dd:b1:b:84:32   UHLWI                 en0    743
10.0.84.81         link#12            UHLWI                 en0      !
10.0.90.169        c6:a6:2b:7:60:f9   UHLWI                 en0   1038
10.0.93.180        3e:33:e3:99:55:7f  UHLWI                 en0    725
10.0.97.157        66:81:1c:c7:c8:b9  UHLWI                 en0    839
10.0.97.215        d6:94:85:8a:d2:94  UHLWI                 en0   1107
10.0.99.208        6a:b9:5b:62:65:50  UHLWI                 en0    884
10.0.99.214        a6:0:8b:63:55:d    UHLWI                 en0   1175
10.0.100.50        3e:e9:56:aa:39:fb  UHLWI                 en0    995
10.0.102.15        14:18:c3:6f:bb:61  UHLWI                 en0   1038
10.0.105.166       12:fc:8:b3:33:d2   UHLWI                 en0    800
10.0.107.173       9c:3e:53:6a:ea:f4  UHLWI                 en0    951
10.0.109.162       1e:b6:76:97:b6:7c  UHLWI                 en0   1029
10.0.111.110       b6:1a:37:5d:19:56  UHLWI                 en0    750
10.0.115.77        fa:ed:9f:c7:ab:f2  UHLWI                 en0    643
10.0.152.130       be:81:78:10:60:78  UHLWI                 en0    758
10.0.154.170       e:4a:47:52:c9:8d   UHLWI                 en0   1056
10.0.155.38        22:2f:60:7e:d8:e3  UHLWI                 en0    833
10.0.155.60        6:3:77:28:92:4e    UHLWI                 en0   1194
10.0.155.170       22:63:ea:37:41:ea  UHLWI                 en0    911
10.0.156.187       c6:44:70:6d:6b:23  UHLWI                 en0   1196
10.0.159.125       e2:9b:7e:a5:c:dd   UHLWI                 en0    672
10.0.160.75        8a:13:3b:f6:b:b6   UHLWI                 en0   1149
10.0.161.63        7a:53:57:41:6e:88  UHLWI                 en0    707
10.0.161.73        26:b9:a5:b0:52:77  UHLWI                 en0    912
10.0.161.102       ae:fc:58:e6:b4:d1  UHLWI                 en0    673
10.0.161.132       86:b0:3f:30:ab:c6  UHLWI                 en0    755
10.0.163.64        52:32:d:56:92:a1   UHLWI                 en0    676
10.0.163.239       d2:f:42:f5:a5:be   UHLWI                 en0   1017
10.0.165.143       86:19:49:58:a4:60  UHLWI                 en0    685
10.0.165.224       a2:a5:52:95:c7:62  UHLWI                 en0    705
10.0.167.76        e2:af:7:86:a2:fc   UHLWI                 en0    980
10.0.168.15        16:4:81:ba:5:4f    UHLWI                 en0   1072
10.0.170.128       94:52:44:4e:78:dd  UHLWI                 en0    712
10.0.170.149       a8:30:bc:a7:f2:45  UHLWI                 en0   1200
10.0.171.14        1e:3d:aa:ce:ca:3e  UHLWI                 en0   1191
10.0.171.91        ae:7c:c4:4f:f2:90  UHLWI                 en0   1120
10.0.171.189       64:6c:80:c2:de:e7  UHLWI                 en0    781
10.0.172.66        6a:58:f1:b2:dd:f6  UHLWI                 en0    654
10.0.172.108       32:8d:ec:7a:a2:b9  UHLWI                 en0   1031
10.0.172.222       link#12            UHLWI                 en0      !
10.0.173.29        6:58:46:70:25:60   UHLWI                 en0    657
10.0.173.31        e2:63:43:e7:66:43  UHLWI                 en0   1190
10.0.173.37        12:65:5b:bc:62:a5  UHLWI                 en0    824
10.0.173.44        2a:21:5f:6c:e:22   UHLWI                 en0    918
10.0.173.60        d6:af:a8:4:5d:d9   UHLWI                 en0    797
10.0.173.110       2:92:fd:5b:52:81   UHLWI                 en0    696
10.0.173.129       1e:5b:ca:c4:b4:6d  UHLWI                 en0   1152
10.0.173.158       ee:4f:e8:fb:d9:d3  UHLWI                 en0    939
10.0.173.174       5e:29:5:c4:eb:4a   UHLWI                 en0   1063
10.0.173.211       ae:78:4a:8f:9c:25  UHLWI                 en0   1145
10.0.174.26        e6:58:11:74:cd:46  UHLWI                 en0    793
10.0.174.38        fa:a7:af:47:9c:f4  UHLWI                 en0   1039
10.0.174.60        be:41:33:4d:1:f3   UHLWI                 en0    835
10.0.174.204       c2:e4:86:44:81:86  UHLWI                 en0    698
10.0.255.255       ff:ff:ff:ff:ff:ff  UHLWbI                en0      !
127                127.0.0.1          UCS                   lo0
127.0.0.1          127.0.0.1          UH                    lo0
127.255.255.255    127.0.0.1          UHW3I                 lo0   3373
169.254            link#19            UCSc                  en5      !
169.254            link#19            UCSI                  en5      !
169.254.100.222/32 link#19            UCS                   en5      !
224.0.0/4          link#12            UmCS                  en0      !
224.0.0/4          link#19            UmCSI                 en5      !
224.0.0.251        1:0:5e:0:0:fb      UHmLWI                en0
255.255.255.255/32 link#12            UCS                   en0      !
255.255.255.255/32 link#19            UCSI                  en5      !
Internet6:
Destination                             Gateway                                 Flags               Netif Expire
default                                 fe80::%utun0                            UGcIg               utun0
default                                 fe80::%utun1                            UGcIg               utun1
default                                 fe80::%utun2                            UGcIg               utun2
default                                 fe80::%utun3                            UGcIg               utun3
::1                                     ::1                                     UHL                   lo0
fe80::%lo0/64                           fe80::1%lo0                             UcI                   lo0
fe80::1%lo0                             link#1                                  UHLI                  lo0
fe80::%ap1/64                           link#11                                 UCI                   ap1
fe80::b0be:83ff:fe3f:fc28%ap1           b2:be:83:3f:fc:28                       UHLI                  lo0
fe80::%en0/64                           link#12                                 UCI                   en0
fe80::43:e853:1791:b835%en0             d6:94:85:8a:d2:94                       UHLWIi                en0
fe80::6d:67b1:29ea:b581%en0             ba:c4:47:f4:59:9c                       UHLWI                 en0
fe80::81a:b488:87e1:ec17%en0            d2:f:42:f5:a5:be                        UHLWI                 en0
fe80::81c:4c26:3cde:99f0%en0            e6:58:11:74:cd:46                       UHLWI                 en0
fe80::866:620a:4b98:c26d%en0            b0:be:83:3f:fc:28                       UHLI                  lo0
fe80::c5b:664c:a2e7:3915%en0            d6:a5:63:46:3c:7d                       UHLWI                 en0
fe80::c60:f316:c3a7:9fcb%en0            5a:e4:75:ef:de:78                       UHLWI                 en0
fe80::1007:b0b9:115a:e8d6%en0           a6:9d:9c:e:96:98                        UHLWI                 en0
fe80::108a:4d74:d6a:9fe2%en0            f0:db:f8:3:90:de                        UHLWI                 en0
fe80::149a:6f4c:f03f:4a9c%en0           c6:44:70:6d:6b:23                       UHLWI                 en0
fe80::14a0:4b39:94a3:4943%en0           a6:0:8b:63:55:d                         UHLWI                 en0
fe80::1c2a:d116:e4e7:4370%en0           be:81:78:10:60:78                       UHLWI                 en0
fe80::3c63:e6ff:fefa:4eff%awdl0         3e:63:e6:fa:4e:ff                       UHLI                  lo0
fe80::3c63:e6ff:fefa:4eff%llw0          3e:63:e6:fa:4e:ff                       UHLI                  lo0
fe80::%utun0/64                         fe80::3f1e:969d:207d:8c75%utun0         UcI                 utun0
fe80::3f1e:969d:207d:8c75%utun0         link#15                                 UHLI                  lo0
fe80::%utun1/64                         fe80::ce81:b1c:bd2c:69e%utun1           UcI                 utun1
fe80::ce81:b1c:bd2c:69e%utun1           link#16                                 UHLI                  lo0
fe80::%utun2/64                         fe80::6eb7:1d90:1644:e51e%utun2         UcI                 utun2
fe80::6eb7:1d90:1644:e51e%utun2         link#17                                 UHLI                  lo0
fe80::%utun3/64                         fe80::5dc7:ada9:376c:94ec%utun3         UcI                 utun3
fe80::5dc7:ada9:376c:94ec%utun3         link#18                                 UHLI                  lo0
fe80::%en5/64                           link#19                                 UCI                   en5
fe80::1cf7:9c51:1901:6577%en5           0:e0:4c:36:7:b7                         UHLI                  lo0
ff00::/8                                ::1                                     UmCI                  lo0
ff00::/8                                link#11                                 UmCI                  ap1
ff00::/8                                link#12                                 UmCI                  en0
ff00::/8                                link#13                                 UmCI                awdl0
ff00::/8                                link#14                                 UmCI                 llw0
ff00::/8                                fe80::3f1e:969d:207d:8c75%utun0         UmCI                utun0
ff00::/8                                fe80::ce81:b1c:bd2c:69e%utun1           UmCI                utun1
ff00::/8                                fe80::6eb7:1d90:1644:e51e%utun2         UmCI                utun2
ff00::/8                                fe80::5dc7:ada9:376c:94ec%utun3         UmCI                utun3
ff00::/8                                link#19                                 UmCI                  en5
ff01::%lo0/32                           ::1                                     UmCI                  lo0
ff01::%ap1/32                           link#11                                 UmCI                  ap1
ff01::%en0/32                           link#12                                 UmCI                  en0
ff01::%utun0/32                         fe80::3f1e:969d:207d:8c75%utun0         UmCI                utun0
ff01::%utun1/32                         fe80::ce81:b1c:bd2c:69e%utun1           UmCI                utun1
ff01::%utun2/32                         fe80::6eb7:1d90:1644:e51e%utun2         UmCI                utun2
ff01::%utun3/32                         fe80::5dc7:ada9:376c:94ec%utun3         UmCI                utun3
ff01::%en5/32                           link#19                                 UmCI                  en5
ff02::%lo0/32                           ::1                                     UmCI                  lo0
ff02::%ap1/32                           link#11                                 UmCI                  ap1
ff02::%en0/32                           link#12                                 UmCI                  en0
ff02::%utun0/32                         fe80::3f1e:969d:207d:8c75%utun0         UmCI                utun0
ff02::%utun1/32                         fe80::ce81:b1c:bd2c:69e%utun1           UmCI                utun1
ff02::%utun2/32                         fe80::6eb7:1d90:1644:e51e%utun2         UmCI                utun2
ff02::%utun3/32                         fe80::5dc7:ada9:376c:94ec%utun3         UmCI                utun3
ff02::%en5/32                           link#19                                 UmCI                  en5
It is finally working. I am not compromising on WI-FI and I didn't need to change the service order.
I ran:
sudo route delete -net 169.254 -interface en5
sudo route add -net 169.254 -interface en5
It deleted the subnet and added it anew to the table 

This has been a long journey. Thank you Jaka.