It is disconcerting to see that quite a few of the well-known billionaires seem to have just outright insane beliefs. And those are people with real power and the ability to influence events on a larger scale.

How does it work with dictators? I suggest it's a spectrum: the more powerful you are, the more you can surround yourself with yes-men. Of course there are a lot of different people, there's probably very grounded dictators and billionaires too, you probably don't hear much about them.

I would say it is natural that humans with so much power go crazy. What is not natural is allowing them to have that power in the first place. If a society allows that, it deserves anything that could happen to it, whether it's Armageddon, climate change, pollution, idiocracy, or whatever.

It doesn't seem that supprising. You need a certain level of narcissism/sociopathy to have the drive to become a billionaire in the first place.