But... you've got no experience with any other accelerators on which to base that opinion. Uninformed and unrepentantly incendiary is not a great combination.

I'm not saying you're wrong for feeling this way about YC. You aren't. Everyone has opinions they haven't bothered to verify with data, some of which might rub other people the right way. The trick is remembering that they're probably not worth sharing to a large audience, or stridently defending.