With a very, very short amount of research you'd find he has a pretty seasoned track record, having sold Venmo's parent company to PayPal for $800m in 2013. Not exactly the drop-shipping repackaged olive oil salesman you're painting him to be.

Personally, I try not to throw out accusations about people when I'm this unfamiliar with their background. I'd encourage you to consider a similar habit :)

So he's a successful businessman.

How does that background translate to any kind of scientific competence? Because his website is heavy on the buzzwords and the Silicon Valley "glorious future"-talk and remarkably light on anything resembling responsible science.

He clearly doesn't want to advance knowledge about longevity, he wants to be the world's top longevity marketer and salesman. It's just a business long shot to him. And yes, that is perfectly congruent with his background.

Like taking nutritional advice from a successful entrepreneur, and startup advice from doctors?

It seems that Jobs is way more successful than him. Should we follow his fruit diet?

I don't think he needs te money tbh

As an entrepreneur myself, I can tell you that "needing the money" stops being a significant motivation after a while, or at least takes a back seat to the thrill of just getting people to buy the thing.

Well a lot of the scam artists are rich. It's not like they have stopped scamming