Installed Beeper on my phone because the spectre of ads looms over WhatsApp because Meta is Meta. Not an endorsement, just 'oh, I guess I'm just doing this now'. (And yeah, Automattic acquired it, it won't be sunshine and rainbows, but temporary solutions are usually the name of the game in this current tech economy.)
The attempt of a cross-platform chat application takes me back 15 years. I'm neither here nor there about that - I'm not an XMPP stan, I've seen folks who were also Mac users 15 years ago say they miss Adium, I'm not one of those people. It was riddled with communication mismatches on E2E encryption and wasn't well architected for the era of smartphones.