Mr. Beast has to be one of if not the most charitable YouTubers. He’s an effective altruist fever dream, curing disease and easing poverty through free entertainment. There are many worded YouTubers for the world. Perhaps it’s just his ostentatiousness that rubs people the wrong way. Do we want our saints to keep things low key?
It's not free. Like anything else, there is an opportunity cost for watching garbage. Mr. Beast and content-creators like him are precisely the reason my children won't have free access to YouTube if not smartphones entirely. He creates mindless garbage content that helps rots peoples' brains. Yes, plenty of other content on YouTube is no better, but this stuff actually gets marketed to people including children, and its aggregate millions if not billions of manhours of people mindlessly staring at this shit is not at all a good thing. The fact that some of it happens to result in people having an affliction cured doesn't reverse any of the wastefulness.