Have you seen the 2hour+ looping video phenomenon? My friends children introduced me to this. Their favourite videos are extended looping videos of the same 1-minute content. Songs, or funny moments, whatever. Their favourite YouTube activity is to see the same thing over and over and over for hours. They react nearly the same way to the same thing for the whole time. I'd never seen anything like it, but their recommender feed was full of them. I guess the algorithm works.
The article hints at this, but doesn't really point it out, when they talk about children living to see the same kind of thing repeatedly, to try and figure it out.
I'd be really curious to see if this actually helps the learning brain, or hijacks it, preventing deeper understanding through varied examples.