Needs to have a couple of examples of corporate changes and their relative impacts just to put it into perspective

Yep the flaw is assuming that humans would actually select for constructive comments. It’s a case where humans claim that’s what they want, but human actions do not reflect this. We’d eventually build yet another ‘algorithm that picks what immediately appeals to most users’ rather than ‘constructive’. You’d also see the algorithm splinter along ideological lines as people tend to view even constructive comments from ideologies they disagree with unfavorably

They just need to pull shorts out into it’s own app. It’s not very often that I’d want to freely mix short 30 second videos in between longer YouTube content. They’re different use cases.