For the record, YC doesn't push any particular ideology as hard as 37signals does. And if you were to ask PG, I think he'd say that different things work for different companies and founders. Running out of money before capitalizing on a profitable business model is the most common way that startups die. So launching quickly, raising money, and pivoting are all good things.

oh I see. For some reason I thought Jason Fried and pg were completely on the same wavelength when it comes to startup methodology

It's a costly path only few can afford to take, funded by the other few who believe that big bangs can happen overnight.