I was replying to someone who said everyone should switch to Matrix, and calling "uncooperative" anyone who doesn't, as if Matrix was somehow objectively superior to every other IM protocol. I agree it is better than most (maybe even XMPP), but this is a subjective matter, and protocols who don't switch to Matrix like Gitter or Rocket.Chat did do not deserve to be called uncooperative.

> If the same amount of effort went into improving XMPP as goes into complaining about Matrix, then XMPP would be in a much better state.

It goes both ways. I don't know about XMPP, but IRC would be in a better state if people who complain about IRC would spend as much effort checking out newer IRC software (which already exists!) instead of using legacy stuff, then throwing the baby out with the bathwater.