Does this guy know his business? Oh, hell, yes. He clearly knows his business cold. Success always has a significant chunk of luck, but skill is a part of luck, and he clearly demonstrates that skill.
However, just because someone really knows their business and does well at it does not mean we simply give them a complete pass. For example, payday lenders know their business very well yet we still consider them to be exploitative and parasitic.
This guy is super-specializing in explicitly targeting pretty much mostly teenaged males with purely dopamine hit content with very little benefit (if any and possibly a negative effect) to the audience. He is pushing the video equivalent of junk food to an audience with weak, underdeveloped impulse control.
This is going to get pushback, and it absolutely deserves that pushback.
> excuses for why it's not necessary in this instance to re-examine your priors.
Which priors should I reexamine? The fact that he is effectively targeting adolescent males? The fact that YouTube is all consumed with feeding the ad machine and should be forced out of Google? The fact that social media has turned out to be a pox upon our society?