I agree with the other person here. It’s just the context of YouTube. Take HN for example: there’s little to no adult content on this site.
I’m in a similar camp in that I’m frustrated daily that Facebook can’t figure out that I (admittedly a single 30 male) don’t want the lewd content. I say “show less of this” on every lewd post, but it can’t figure it out.
That being said, I think the answer is fostering/finding other communities with different natures rather than changing Facebook or YouTube to be something they aren’t.
I don't think it's too much to just give feedback into the void with the hope that if enough people chime in with the same thoughts, that some day some Google PM might actually do something about it.
That being said, I'm sure its a question of $ budget for ML recommender processing and/or the cost of labeling videos. But the labeling could be done by users.