Mr. Beast's motives are irrelevant if that's the belief you're operating under.
There’s already a type of degradation in a conventional job: someone having power over you that you can’t question, you have to degrade yourself by being agreeable to nonsense, you have to whore out your time and attention and energy, etc.
Spending 100 days in isolation is less degrading to me than all the things people take for granted at even their cushy software job, they’re just used to it.
How many of you are forced to sit in on absolutely banal Zoom meetings yet grandstanding about what someone else wants to do for $500k?
A person that has no problem with paid labor but does have an issue with 100 days in a circle could have a consistent view if they believe that the former doesn't rise to the level of "torture" or "embarrassment."
It's also a short article. Bringing in other examples would necessarily lengthen the piece and potentially distract from the major points of the piece.