I mean if you could point to anything remotely as easy to use and functional as discord then this joke makes way more sense.

All you need to do is take a look at the working versions of these apps (slack, teams, etc) at some of the main features to see how crap the competition really is.

The widespread use of Discord baffles me. It seems to be basically IRC with voice chat and no choice in servers. It’s good for group voice chat with people you already know, but I can’t see how it fits any other use case like being a replacement for a subreddit community.