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.
Reddit helped me a lot over the years with my doubts and issues. Whenever I had any doubt with anything, I always found atleast one or two posts about it with some helpful answers. But yes, Reddit is filled with nasty people with their criminal minds. People use downvote feature for their personal satisfaction. If they do not like your comment (even if it is true), they will downvote you and then constantly harass you until you delete the comment. Moderators delete your comment and block you without giving you any explanation or a chance to explain yourself. The best way to use Reddit is to use it without an account.
I've definitely and obviously noticeably seen voting as disagree here too in many instances. That's not better here. Maybe less impactful due to size. In most cases still outweighed by upvotes (of agree or good contribution intention).
Moderation will likely run into the same issues. Because it's fundamentally the same approach and system.