1087
Discord != Documentation
(lemmy.dbzer0.com)
Post funny things about programming here! (Or just rant about your favourite programming language.)
It's free*, insanely easy to set up, you don't have to worry about port forwarding or ddos or hosting fees, has powerful moderation tools, and there's a plethora of easy to deploy bots that help manage permissions and automate routine tasks. Literally, if it had a proper web-accessible forum similar to phpBB, it would be perfect.
Basically the same reasons subreddits supplanted forums.