>I am willing to bet he knows his metrics better than >95% of startup founders.
Id bet so too. Becuase he's definitely rich enough even pre-youtbe to just find a YT contact and ask about the metrics, on top of studying his market. Very few startups get such objective data.
> Hiring only A-players. Bloated teams kill startups.
It really depends on your stage of scale. You don't need 100 A-players once you start expanding the app. And it benefits to train younger workers on your systems as your older ones start to move on, retire, or die.