It seems to me that a lot of this is just focusing on ZP. I do take Yahtzee seriously. He's well-reasoned and shows that he does understand what he's talking about. I prefer Extra Punctuation to Zero, only because he has more time to go into depth about the aspects he mentioned, and talk a little more about theory and design. So yes, I take him seriously. OF COURSE I take him seriously.
As for ZP, he said something once about "I wait until you've devoured all the glorious, delicious hype, and then open up your cup and show you the milky, tasteless sludge that's actually there." If it's a brilliant game, it's not like it doesn't have a few glaring flaws, and vice versa. It's like Charlie Brooker, an acknowledged influence: He's going to rip the hell out of it, but there will be good points in there.