Thats a shame, I used to be able to pass fake location data through on an app by app basis using an Xposded module. That was probably 10 years ago though.

This has been a thing for rooted devices for a long time with faking senstive data on android Although i wouldnt root any sensitive devices nowadays

Isn't that a moot point with the graphene location proxy tool?

Are you talking about their network location provider? That doesn't do anything to spoof location. It just allows querying apple (optionally via graphenos proxy) for the location of nearby wifi networks, rather than going through google play services. Apps can still figure out whether you denied location permissions.