[charcircuit]

>You don't need everyone unless you're trying to IPO

But if you are looking for people to talk to, but they don't use IRC (read: almost everyone) there is no reason to use IRC. If I wanted to talk about speedrunning a game I will go to Discord because that's where the community is, not on some IRC server.

[rhizome]

Slack doesn't get money from casuals, so if your company says "hey we use IRC," you're going to plop a client on your laptop and be done with it (and there are web clients besides). It's not a learning curve you'd have to worry about.