One thing I’ve noticed is that a ton of posts from the top 0.1% subs will get about three to four hours of thousands of updoots and comments and then get nuked by the mods with no reason given, pointing to it being bots. Like a few years ago it seemed like the repost bots were sneaking in and getting posts at the top to then be able to sell the account for someone else to bypass spam filters. Now it feels like the majority of top posts are that, and that anyone engaging in the top content is also grinding out the accounts that will be used to spam them at a lower level.
I got permanently banned for reporting spam (“abusing the report button”) after I reported 8 Vice articles posted in /r/politics by the Vice self-promotion account in one day.
Meanwhile, the spam guidelines page says - if you create an account primarily to promote your own content, you may be a spammer. And as a redditor, you should report spam.
They lost a 12 year long user who primarily engaged in niche technical subjects who went out of their way to answer newcomers’ questions.