I don't agree with this, he does all sorts of stuff, blows up boats, maroons himself on an island, creates gameshows, none of which are exploiting participants (beyond what every single gameshow that's on tv has done for the last 50+ years of television).
I've seen enough Youtube shorts to know that there's an entire subgenre of the form that consists of giving homeless people $10 of burger and filming them being grateful with sad music overdubbed and waiting for people to say "oh bless your heart." That is fucking disgraceful, IMO.
But what Mr Beast has done is become one of the biggest (the biggest?) youtuber in the world and has then used his platform to provide food to underprivaleged families - filming people from charities, not the recipients, or cleaning rubbish from the seas, or planting what is actually millions of trees, or restoring the sight of people who need a relatively minor operation (and putting that on camera, Oh no!). In those cases, he's used his platform to encourage other people to donate.
He probably could have been just as successful and maybe made as much money without doing anything to benefit other people.
If you're going to let a kid watch popular Youtubers, is he the best of them? Probably.
I don't know what terrible things might be about to be pulled from his closet but if
- Mr Beast wanted to partner with Mystery Brand (Jake Paul and Ricegum's lootbox grift), and his manager needed to talk him out of it
is 3rd on the list of attempts to take him down, we can probably assume there's not much out there.