https://nathankyoung.substack.com/p/the-death-of-the-downvote
Downvotes is what makes Reddit, Reddit. The entire karma system depends on it. It’s one of the biggest sites with the most uniform thought. Get too many downdoots and you can’t post in certain places. Extending it further to auto-banning you from certain subreddits if you’re subbed to the wrong subreddits, as well as not allowing to post with an account that’s too new. Everything is curated to keep you and what you see the right think. Engagement farming or ragebaiting is better in comparison because at least dissent thoughts can be made at all.
With concerns to the algorithm, there is usually a “not interested” button or block button that reduces that type of content. Instagram and Tiktok especially let you filter whatever you want by filtering keywords you write in yourself in the settings.