There's no evidence that any of the things mentioned came from SneerClub. As far as I know the original doxxing came from some alt-right dude with mental issues on tumblr who thought he was shadowbanned and posted in response to a SA reblog on tumblr 'Care to comment, Scott Alexander [Real Surname], working at [Actual clinic] in [Actual location]?' to which SA replied with 'No one's shadowbanned, you're banned for doxxing me though'. This is all relatively easy to look up and check.

SneerClub was always ever about venting about rationalists when the dumb speculation about evopsych and the IQ of black people went out of hand, and people who have attempted to doxx Scott on there have been banned. (Doxxing people at all is against the rules of reddit anyway.) Yes, it's a circlejerk subreddit, yes it's petty etc. But it's not the evil den of terrorists rationalists think it is.