At first, my impression was "What is this? This doesn't look like a zelda game to me..." then i looked at the cover and it was a zelda game. I still dont own the game itself, but i can still borrow it from my friend.
It's just an expectation thing, people wanted OoT 2002, but what they got was Wind Waker, it's like when you're craving a juicy steak, but instead you get a delicious vegetable soup; it's not bad, just not what you wanted.
I think it's because some people seem to think it is more childish looking and they wouldn't want to get caught playing this game. But on the contrary, the graphics are intensely profounding and I definitely give credit to Nintendo for making a very delicate and gambling decision on these graphics.