I don't follow or watch Mr Beast videos, but from what I've seen, they are largely driven by a money fetish and as far as "creativity", it feels on par with the more boring "What would you rather" conversations I had in middle school.
Maybe he has unlocked the key to virality by vigorously analyzing data, but looking at his videos, at a glance, it seems to more be formulaic, predictable, and simply having an actual budget that sets it apart (if it is actually set apart, as I find it hard to tell how much of it is others copying his work versus hius work being unoriginal).
Interesting that you say this regarding YouTube. I've been saying this regarding Twitter for awhile even though I consume quite a bit of YouTube content. However, I've curated my YouTube feed to be almost entirely stuff that is interesting, educational, and that I think I'm getting value from. I've learned tons of useful stuff from YouTube such as how to dress better and tailor my own clothes, how to fix things that break around my house, more effective training methods to accomplish specific fitness goals...I could go on and on. When I go to YouTube in incognito mode, I definitely see the bottom-of-the-barrel content that you're talking about. But it doesn't have to be that way.
Those creators are still making orders of magnitude less money than people who make zero content attention grabbing controversy meme slop videos.
While many try to make a living off YouTube (and some do) there are no guarantees offered nor should any be expected.