Xmpp is far from death. Just because many started to use matrix instead doesn’t mean it’s dead. Even though matrix is a Ressource and performance nightmare much more so than xmpp will ever be.
How is matrix a performance nightmare? been running a matrix server for years with almost no issues. I guess the only exception was the few times I ran out of hdd space, but that’s it.
Xmpp is a an official Standard.unlikr things like matrix.
What’s an official standard? Matrix is a protocol just like xmpp and the specs are public, just like with xmpp.
Matrix is a nightmare to selfhost, too.
It’s literally as easy as running a docker container and editing a yaml file, at least for synapse.