> I put on some science video and walked away recently... came back latter and the autoplay had navigated itself deep into k00ky flat earther stuff.

That's the point of youtube autoplay. You leave it running long enough it'll go through all the videos. That's what makes youtube interesting. At least that's what made youtube deep diving interesting before all the censorship.

You go through enough books in the library and you will eventually find books on alchemy.

Also, you could turn off autoplay with a click of a button...