I think what would really be great is a social media site that doesn't offer direct image or video hosting. A bit like how reddit used to be. You just have link aggregation, voting, and comments. That's it. Maybe in a nice, clean, minimal UI as well. This would lend itself to tech folk I think. If only it existed.
This always leads to a hivemind. Because even if you're supposed to use it for rewarding good posts, what the horde ends up doing is using downvotes as a disagree button. Especially if the admins/moderators have authoritarian powers to hide content on top of the users' individual powers or rate limit posting by those with differing views. Because everyone's bias sneaks in - no one is exempt from this - and it's very hard to see your own biases if you don't deliberately venture out of your filter bubble regularly. The best tool I've found for this so far (and I maintain a search) is https://www.allsides.com/unbiased-balanced-news It gets trickier when one side completely ignores a story, which both do.