I try to use irc, but it's greatly changed. For example, #freebsd will have a few hundred people there, but no conversation. Sometimes if you ask a question you get an answer, but often you don't.
I've also found that the #weeslack channel will sometimes be helpful if there's an issue, but other times, I got no answers till I opened an issue on their github. (weeslack enables you to use slack with weechat)
https://github.com/wee-slack/wee-slack
I don't think I've visited too many others in awhile. I said this in another thread about irc, but #freebsd used to be a hangout, lots of us exchanging information and helping people, conversation always going on in channel and privately. I guess this was in the mid double oughts.
I know a guy who still relies on it for much of his information seeking. I believe he mainly uses Gentoo. I remember, again years ago, that channel was always busy and there was even a #gentoo-buffy, because a lot gentoo users were buffy fans and the mods got annoyed at too much off topic conversation.
TL;DR yeah, I still use irc sometimes, but there seems to be far less socializing there than there used to be.