I notice certain pattern among some internet communities.

Extreme hype / popularity around a community, followed by degeneration (or increased visibility of prior degeneracy) of that community, followed by bans and/or deplatforming. Off the top of my head FatPeopleHate, TheDonald, and recently Parler are prior examples, I bet there are others though.

WallStreetBets seems like it's heading down a similar path. In fact, I bet a lot of the people in these communities overlap, though I have no proof.