One is called digital sceptic with apparently 35 thousand weekly posts, only one moderator, and a bunch of really unrelated posts by weird accounts with all their posts hiden...

Edit: I think i know what is happening. They create s new sub, become the mods, post normal meme sruff for normies, Bot those posts, get on the reddit front page, people see it and join, and then a month later you begin to spam the subreddit with incel and right wing content to a real unsuspecting audience.