He isn’t genuine. In his origin story you’ll notice he talks about trying lots of different strategies to maximize his views and engagement. That’s his only real goal. He stumbled upon his current formula by accident after significant iteration.
It strikes me that he could have just as easily be producing any kind of harmful content if the rules of what’s acceptable to society and YouTube were different. It just so happens that in his case the content is self-reinforcing and easily defensible.
He is the same as the people who film themselves giving flowers to lonely elderly people. Such people do not feel good about doing good acts because of the actual act, they crave the attention and praise that doing good often brings, and they need it in great quantity.
The act itself is just a vehicle for vulnerable narcissism and wouldn’t exist or have been done in the first place without these outlier personality traits enormous investment.