Your logic is wrong. If I understand you correctly, you are saying:
- Phone already knows precise location (through GPS).
- Therefore, it's no use hiding this information.
To this I would ask, from whom? Sure, companies and government may already have access to it in some way, we can't rule that out. But what about TankieStalker42069? Does he know the GPS coordinates? I would bet he would be very happy if you shared your location on a post, and then another post confirming it.
Rust the memory safe programming language? Hell yeah!