But in economic terms (what I believe Pincus/Zynga meant), no, the chef did not contribute substantially to revenue/profits the way engineers and sales people did.
I don't think Pincus is saying chefs are not important in the qualitative sense (that their contributions don't matter as much as engineers) - I believe he's saying they do not contribute enough economic value to generate a 20 million dollar pay day. And he's right - the labor markets don't pay chefs anywhere near that much.
But he's wrong for lumping economic contributions as an employee (charlie the chef) and asset appreciation (charlie the investor) together.