MrBeast creates videos to entertain and portrays himself as an altruistic person.
One aspect of that is donating some money from videos to charity.
On the other hand, he is criticized for promoting unhealthy food to children and using gambling-like tactics to increase sales and manipulate his audience.
This question will be resolved based on the results of a poll conducted on Manifold at the resolution date.
Recent video exploring this topic:
Another point is that Mr Beast shows a brutalized form of capitalism in which people can be pushed into any form of undignified work if they are lured with money. This can be a negative role model because money appears to be quick way to power over people and a replacement for other values and social connections.
It's possible that under standard eg EA values his counterfactual impact is positive (people watch MrBeast gameshows instead of watching other youtube videos and playing mobile games, so they aren't hurt that much, and he donates more and more effectively than other creators) but there's a sense in which what he's doing is "unvirtuous" anyway, and that talented people shouldn't be doing stuff like this! I think that counts as 'net positive' though