(then they started having shorts, so I cancelled youtube premium)
I personally find them nigh unusable because of the lack of any kind of filtering. I am on HN precisely because it has a somewhat working post sorting system — a recommendation engine, as an activist who wants to get HN in trouble might say.
Anyway I doubt a regulation as such would fly under the first amendment. Recommendation is expressing and opinion and expressing an opinion is speech. If I think one post is better and deserves to be on the top spot, I believe I should have a right to say it without some guy in DC telling me to shut up.
In a perfect world it would be great to have a platform that allows open-sourced algorithms for people to choose from, although that's a crazy pipe dream.