It’s all about powerplay and finding the best rhetoric that plays best with your level of charisma to try to whitewash it with. Sometimes it’s also used as a filter because it inherently attract a certain type of person in those communities sort of like r/conservative in reddit attracts a certain type of person. The modern social network is a lot about being able to create and grow your own cults on demand.

Say what you will about reddit, lemmy has plenty of brain dead people as well, and in some ways they are even more cultified.