Don't be distracted by the Marine Corp analogy. This is a really accurate description of what it feels like to do YC.
I'm not bagging on this guy specifically, but this article/description is below-average writing even for a high-school dropout. I'm not trying to quibble on semantics or be a grammar-nazi, though I'm sure I'm doing both, but it's long, vague, jumpy, and plain hard to read.
some optimize for speed & utility... others optimize for look & feel. neither is necessarily correct, just different.