This is such a weird take for me, and it's popular enough of a take that it makes it weirder.
Arch is, by default, a barebones distro. The whole point is you start from nothing with very few defaults and learn how to get everything up and running yourself.
Complaining that the way arch works sucks cos you don't want to do that is bizarre.
Imagine complaining that Linux From Scratch sucks cos you have to do it from scratch.
Endeavor OS exists, it's what Endeavor OS should be. You can just use it, no one will complain. The Arch folk might be less inclined to help with it, but that's why there are Endeavor OS folks to talk to.
cos irc just works. It worked just fine 20 years ago. It worked 20 ish years before that. In 20 more years it'll still work.
Any idiot with some time and a computer can throw up an ircd and host a server for people to chat on. Every other chat program either requires some random company to host it, or a much deeper knowledge of computers and software.
The clients are available for every system around. From tiny little simple single connection clients, to massive complex graphical systems. You want to chat on plan9? There's a client. An ancient amstrad cpc? There's a client. (That one might be a bit more challenging) Android, Linux, Windows, Mac? All of them have clients, most of them multiple.
I will say, I like Matrix, I like XMPP, I am not a huge fan of any of the chat clients with a single point of failure like discord or teams or whatever. But IRC is still my favorite, and probably will be forever.
I just have it setup the way I want.