It's the money that comes from getting people to watch ads, generally speaking. If people write an article, even if it blows up all over the internet, nothing happens. If they make a little shitty short that appeals to kids, with a thumbnail where they make a stupid face, they get a a chunk of actual money. I imagine it's real hard to not get influenced by that.

But as understandable as it may be, a clown whose job is to keep people entertained until the ad break can talk about a lot of things, but cannot be something else. This clown talks about math, the other one just rubs the microphone over materials and then says "smash that like button", but they all have the same purpose and can only differentiate themselves by how much engagement they create. The platform is the payload, the content is whatever.