[wedn3sday]

Unfortunately the only metric that youtube cares about is watch time, so they're never going to introduce a feature that could reduce that. They _want_ to suck people into meaningless trivial nonsense since thats what keeps them watching more.

[simplicio]

Not sure its that obvious it'd reduce watch time. If you could let your kid watch YouTube with less supervision, presumably some people would allow their kids to watch more YouTube, and more YouTube would be watched.