>>85492011its a "kidtuber", or whatever they're called. They push out dozens of videos a day for children. Basically long playlists of videos that young children can sit down and watch, sort of the same role as childrens tv shows. If you ever see those toy review type videos that have like billions of views, it's the same thing. Just young children on ipads or phones or whatever searching keywords like frozen, elsa, superhero, toys, things like that.
Maybe that description sounds a bit insidious, but like I said it's basically just the internet/youtube version of childrens television shows. Since so many people don't have cable anymore, or even if they do kids dont really give a shit about it, these youtubers are just taking the role of a blues clues or yo gabba gabba or the like.