That's an inherent issue with rising technology. People who don't have the greatest of intentions can abuse it.
The jist that I got was that it isn't even people running the channels for the most part. It's a self automated money making limited AI.
The AI creates cartoons and then depending on which ideas get the most clicks it expands on that idea.
Example:
The AI creates three cartoons. One has a kid smiling, one has a kid crying, one has a kid pooping. The last two garner more clicks so the AI disregards the former because it has been programmed to only care about the number of clicks a video receives not if the video is morally "wrong." The AI will then continue this process all the way down the line until the videos become what we see above.
Its a strange combination of peoples, even kids, dark psyche being taken advantage of by an AI which only goal is to generate as many views as possible to create money for the channel.
Yeah, that's what I'm talking about. You can get AI to run stuff like this effortlessly.