XMPP works best between my wife and I because I have very bad data reception at work, and XMPP is so light it even works if I'm stuck using 3G.

My brother insists on Matrix for communications with him.

My more normie friends, if they're OK with anything, are OK with Signal.

Only the elite few use SimpleX, which means no one uses it with me. (I did get one guy to download it and connect with me immediately, but he had a problem not getting notifications with it.) So I only use it for public group chats. But if ever a weird stranger I just met wants my contact info or number, I will insist on SimpleX.

I used Session with my brother before he dumped it for Matrix, so now I have Session only to hear from SimplifiedPrivacy.

I think people who are like us are nerds or somethin'. Not really, though. We just have common digital sense.