I feel like we have this discussion every month, one way or another. People use Discord because it's useful and they like the experience. Discourse is nice for purely written communication but if you want to setup a call, direct message and, more importantly, write bots (presentation, topic organization, news, modding, now even AI Q&A); people will fall back to Discord. Pointing at Discourse when it doesn't have the…
I have been using computers for 40 years and I cannot see a single feature of discord that I cannot have on a forum or even reddit. In fact, the UX of Discord is abismal.
People on this site really confuse this issue: your dislike of Discord is an ethical one, because it goes against what you believe a chat should be (free/open/whatever). Most people unfortunately just don’t give a shit.