I agree, recommendation algorithms are a huge part of the problem. Consciously choosing what you interact with is a very important part of media consumption IMO and most social media sites give you very little tools to do that (no, having likes/dislikes affect your personalised feed is not enough, especially when that also becomes 'engagement' and boosts it everyone's feed in general). These algorithms should be dumber in all areas except spam prevention (and even then, if there's less stuff in your feed you didn't specifically choose to see, spam should be a much smaller problem anyway).

I think this undersells the problem of discovery a little bit though. For example, youtube has been great at serving me longform content I want to engage with and wouldn't have discovered any other way.

(then they started having shorts, so I cancelled youtube premium)