“Luckily, I’d say I’m a pretty predictable guy.” Luck has nothing to do with it, Mr. MrBeast. Your predictability is the result of years of an information diet consisting of audience feedback metrics. You are the proudest creation of the YouTube Apparatus."
Audience feedback metrics are only part of what a creator does. They are people with complex motivations and being sensitive to audience feedback metrics doesn't eliminate that. I could see saying the ecosystem being a synthesis of demand (I mean that's just trivially true, we don't need an essay on Mr Beast to say that) but from interviews Mr Beast is very much a product of the pressure of YouTube mixed with the very specific nature of who Jimmy is as a person (from interviews he seems like a pretty weird guy and his videos definitely reflect his particular quirks).
Edit: I'm trying to see how the author and I agree but unless the author is saying that people who succeed on a platform are the people that do things that are successful on the platform (i.e. align with audience metrics) then I don't think we agree. And I don't think that's all they are saying because that's just trivially true everywhere and it would make all the talk about philosophy and authenticity useless cruft. I think that Mr Beast is the sorta platonic ideal of a "content creator" driven by metrics and even he cannot escape his own Jimmy Donaldson-ness in his videos.