>Because even though it definitely happened, it's one of those things you cannot prove and that don't really get recorded anywhere.

How do you know that it definitely happened?

>I don’t know why you are downvoted, this is absolutely what happened semi-frequently until Reddit was finally forced to crack down on it.

What subreddits got banned because of that?

>The same thing happened on Twitter/X for a while where bots would mass reply to targeted users with gore and CSAM.

Did any of those targeted users get banned for this or was it just a form of harassment?

Is there any evidence that reddit banned subreddits because of those spammers? Did the reddit admins make a statement?

Your link says there's no actual evidence she did that.