I have been on reddit for just about 12 years now. Something I've noticed over time is just how hateful the place has become. A complete outrage machine. Every single sub became filled with it. I've filtered so many subreddits over the last few years, it's insane. I don't know enough about this place to be sure, but I do hope it doesn't become the same type of echo chamber of anger.
Magic happens when you only require captchas that a language model told you were inciting, hateful, or plain troll feeding. It even makes sense to make part of the score thread-global, as in "Someone already made a Hitler comparison, better throttle this thing". The worse the score, the more often claim that the user failed to solve the captcha.
Accusations of censorship will fall flat because you don't prevent anyone from posting, troll feeders won't bother posting because they don't care enough to bother, trolls get bored, trolls leave.