On the bridge thing I 100% agree, although for the way they works you’ll have to deal with your messages being unencrypted. On WhatsApp (and Discord, I guess? I don’t use it) this probably is still far better than having the app installed, on Signal it’s a bit of a shame because it’s the only app with proprietary-level usability while being real FOSS and e2e. So using it with the bridge kind of defeat the purpose of e2e I guess, but still I’m definitely gonna try it again.
I have a OnePlus 6 and a Poco F1, so I’ll just choose one and give pmOS another go :)