Where is it that Zach implied that what he's talking about there is only applicable if you've decided to build a "great" product, but if you're aiming to build

Where is it that Zach implied that what he's talking about there is only applicable if you've decided to build a "great" product, but if you're aiming to build just a "mediocre", "successful" (but not "great"), then what he's saying is completely irrelevant and not applicable to you? I realize you don't speak for him, but I'm curious if I legitimately misunderstood something here.