Aren’t auto updates a solved problem? It’s only the official f-droid client that doesn’t support this.

you don’t even need an account.

That’s sadly not true anymore for their own hosted service:

https://jitsi.org/blog/authentication-on-meet-jit-si/

tl;dr: you need to login with a Google, Facebook or Github login to create a room

If Android activates bluetooth after booting, it could - in theory - be tracked with the new Find My Device network.