Has anyone ever heard of this happening? A family member is using Wireguard to VPN to my home server while traveling in the UK, strictly for privacy/security reasons (can only use insecure wifi).

Slowly but surely, Google services have begun to think my very residential (ASN 54329) IP address is in the UK. Youtube ads, then Youtube itself, Google search results, and lately Youtube TV even refuses to work. My roommates claim Netflix has even started showing UK content!

Is this some VPN detection/abuse system gone haywire?

It is quite creepy that Google is obviously pairing precise location data from my family members iPhone to my fairly static IP address. It's also odd that I have other roommates with their own phones (Android, iPhone) presumably also feeding Google precise locations from this IP, but the UK one is overriding it.

It seems like if this was some abuse prevention thing it shouldn't be this easy to fool in reverse.