alt Hacker NewsIt's a predictor of what you'll click on. This correlates somewhat with what you want to see, but they don't care one whit about what you want, and the two don't always line up well.
In short, the problem is ragebait. I might open up some app because I want to see cat videos, but when I'm presented with "Polly McPoliticianface LIES about FLOWERS" I'm likely to click in anger about Polly's nefarious actions. Do this enough and you end up with something that just tries to make you angry all the time.
This is inevitable. Ragebait is noting inherent to social media or feed algorithms. Cable news is a 24/7 feed of ragebait. The feedback you provide to the social media (or cable news) algorithm is whether or not you chose to watch it, not why. This is not in conflict with what you want. If you didn't want to hate watch, then you wouldn't do it. That you want it for negative reasons doesn't take away from the fact that you do, in fact, want it.