Reddit has long paid mods to be “Community Builders”. Ostensibly they’re there to help other mods build their subreddits, but actually what seems to happen is they spam low effort posts like the ones described (the “question style” post is very popular) in lots of subreddits.
I’ve posted this before but here’s more info:
Have a look at this user’s posts prior to the blackouts: old.reddit.com/user/WelshCai/ Lots and lots of low-effort posts in various UK subreddits.