1527
FLOSS communities right now
(i.imgflip.com)
Welcome to Programmer Humor!
This is a place where you can post jokes, memes, humor, etc. related to programming!
For sharing awful code theres also Programming Horror.
My guess: The kids who used Discord for gaming grew up, and just went with the familiar thing when starting new communities and projects.
Also, Discord did heavy marketing early on, until it carved out a network effect. So here we are.