Cram it. You can say the same thing about Pfizer, anyone criticizing a dictator, or terrible philosophers trying to publish self help books for profit. By that logic, you're not qualified to defend Mr. Beast either because you don't actually understand the causal relationship between success and charity. It's nonsense criticism, a thought-terminating argument intended to obviate good-faith discussion.
Mr. Beast's problem is obvious, if you're willing to look past his marketing. Because at the end of the day, he's a business. He uses the same playbook as the most abusive monopolies like Apple and Google, laundering his reputation as a healthy net positive on society. Scratching beneath the surface, people know that he lied about how much money he makes, he lied about the cars he drives and the house he lives in, and probably lies to his employees to prevent them from presenting serious competition. Assuming Mr. Beast is, well, smart, assigning him as a happy-go-lucky charity cause is exactly the sort of outcome he wants. If he was serious about charity or altruism, he'd have some grander plan than sponsoring game shows and leeching off his popularity for profit.
By sincerely believing the image he presents, you yourself have been manipulated into thinking he's inert. Give him... I dunno, 3 more months? I've forgotten the average half-life of lifestyle influencers being ousted as racketeers or groomers on YouTube.