But unless I misunderstood the article, he is including snippets from works he is not reviewing, criticising or satirising? That seems clearly outside fair use.

On the face of it, the above seems like he is trying to abuse his membership in YouTube’s experiment with takedown improvements to deny creators their right to profit from their work. I doubt he’ll be punished aside from possible removal from the scheme, but I can’t say I am in any way impressed with his actions.