So, is your position that Jensen Huang, CEO of NVDA, is an idiot?
Do you think you're smart? Have you ever done something and said "man, I'm an idiot"? It's just like that.
Of course, the other explanation is that he's just grifting, which is also very possible.
Having raw intelligence doesn't help if you don't apply rigor to your thinking. I suspect that very successful people actually end up falling into habitual mental shortcuts that cause them to promote stupid things at a later time.