>>714160989 (OP)4chan used to have meme culture, because it was the only way to signal group membership on an anonymous website.
Unfortunately corporations can use meme culture to masquerade as organic anonymous users on 4chan also.
Thus 4chan has, for close to a decade, rejected meme culture in an attempt at rejecting shills.
Boomers on facebook have other means of in-group signalling, so the memes don't compromise their community.
Currently the only way to verify that a user on 4chan is a real 4chan user is to see them post pictures of sexy children.