I have no experience with 4chan. But from what you say follows that regular users of 4chan actually don’t feed (i.e. communicate with) the trolls and the trolls are still there.
This#Troll_sites) might be enlightening. Also see this comment. Being a troll sort of is a prerequisite to join 4chan.
This#Troll_sites) might be enlightening. Also see this comment. Being a troll sort of is a prerequisite to join 4chan.