Third-party recommendation algorithms would be interesting, but I think they'd only address one layer of the addictive design the verdict is actually about. Autoplay, infinite scroll, notification timing, the variable reward patterns from likes and comments -- those are all independent of which algorithm picks the next video. You could swap in the most wholesome recommendation engine imaginable and a kid is still gonna sit there for hours if the UI is designed around endless content with no natural stopping points.

I dunno, careful what you ban; TV has “infinite scroll” too.