Yeah, working constantly for a few years leaves permanent marks. You know what makes it better in ways we'll never have? Millions of dollars, luxury yachts, and fame. Mr. Beast isn't a doctor. He isn't a teacher. He doesn't fight our wars. He makes entertainment for children. He'll be fine.
I think parent comment was referring to employees who are willing to dig in and sacrifice a few years of their lives for MrBeast productions, not to Jimmy Donaldson (though I could be interpreting it wrong).