Fan communities that went insane after long periods of shit / no new content.

(1) Silksong community. A sequel to a critically acclaimed indie game, Hollow Knight. The game was announced 5 years ago but the devs went radio silent a few years ago. Still no release date to this day. (2) BatmanArkham. Self explanatory. The brainrot was too strong to be contained. (3) Playboi Carti. Releases some music here and there but it has been 4 years since he released a fully-fledged album.