I would ask a different question - is Mr. Beast a good role model for the kids or not? Whether he’s a “good person” or not is largely irrelevant, the fact is he is doing good.
Personally I’m a big fan of his philathropy, but I don’t think he makes for a good role model. He’s found a way to influence and doing good for the world, but I don’t think it’s easily replicable nor should kids try to emulate him - because to be Mr. Beast, you need to be in the influencer / clout-chasing game, which can have roads that lead to success but at the end of the day, it’s an endless game of trying to get eyeballs and capture attention.
I would encourage the kids to forge their own path and not necessarily emulate Beast, but try to make the types of impact he makes in the world.