If you're talking about the accounts that just spam articles for a couple months and disappear...

There's a single person who's been doing it at least since the reddit migration 3 years ago, but I feel like it was already a thing before that.

I have no idea what the original ban was for, but all those accounts eventually get banned for being an alt of that account.

Afterwards they just make a dozen new accounts and keep doing it.

It's super weird, and I almost asked this morning actually when I saw a batch had been banned and new ones were already up.

But I know the person wouldn't answer.

Edit:

https://lemmy.world/modlog?page=1&actionType=ModBan

That batch from 15 hours ago for reference