As I said - every single of my chat-app-militant contacts has migrated from XMPP (which they pushed early and aggressively) to Matrix, which includes groups like hacker spaces etc. (at least the ones that didn't just give up and migrate to closed solutions).
I literally have no single person to talk to on XMPP. The software names you mention all trigger flashbacks of horrible experiences, with my last experience even worse than my recent experience with Element, and unless they have been rewritten from scratch, I wouldn't be willing to install them again. At least I can run Element in a browser tab where it can't pwn my system...
There seem to be three incompatible standards for e2ee on XMPP, the latest being https://xmpp.org/extensions/xep-0384.html which is marked "experimental". I've never seen OpenPGP used, OTR was a compatibility nightmare, and I think by the time OMEMO started to be a thing XMPP started to stop being a thing.