Earlier quoted context omitted.
Historically, that human was called a parent. Parents today have no chance at the on-slaught of content and the delivery mechanisms for it. When I was a kid, there were 3 networks with a handful of UHF channels. Cartoons only ran on Saturday morning, most channels went off the air at midnight, and the TV censors were much more strict with would could be on the air. My parents had it easy. When I became a parent, the…
There was also a network level curator like PBS, Nickelodeon or Disney. Are there people/teams making vetted youtube playlists of content that surpasses a certain level of quality? That would be an interesting Kids mode. "Only allow videos from playlists that have been added/sunk to this account." Kind of a middle ground between making Google the content arbitrator and being able to watch every video before your kids…
That's kind of the point of YT though is to completely bypass the network curation. Nobody has what you want on or won't put your stuff on? Screw 'em! We bring you YouTube. The You was the big deal that bucked the network concept.
So no, there's never going to be a human curator for all of YT. If channels want to curate themselves, then they may or may not be rewarded for that with a larger subscriber base.