Kindly point me to three generalist, widely known XMPP servers. The lack of generalist widely known XMPP servers has nothing to do with the fact that today anyone who wants to deploy a modern up to date XMPP server can do so, and has choices. There are also modern actively maintained clients. That’s my point. There are also many general free servers to join, even if not well known. If you base the value of something on its popularity rather than its utility, then we aren’t concerned about the same things. As long as I can use the software I want to use in the way I want to use it, then I’m a happy user. I can’t control what other people use.