I decommissioned my server 3 months ago and migrated my community back to IRC. I still had the IRC Podman containers kicking around, so that was easy. I dealt with ~monthly issues around my devices not being correctly verified, messages not correctly decrypting, and various other rough UX edges. There seemed to be a lot of velocity in the beginning but the last couple of years have addressed approximately nothing in…
If I were to upgrade an IRC-based community to something newer and richer, I'd go with Jabber, well-known, well-established, with a ton of various clients and several servers. Yes, it's not ideal, but it's still a massive upgrade compared to IRC, if your server supports a good list XEPs and your community members agree to use non-esoteric clients that also support them.