Beeper is built on matrix and uses a bridge to RCS, so I've thought of using that in place of Google messages, but you have to link it with Google messages, so it doesn't really help me with escaping Google
Google are assholes and refuse to actually build an open standard that can replace SMS
I quite like using it in Messages. But I wish it was consistent with activating on the phone via the home button and that the history carried over as I don't think the latter it does.