Yahtzee "reviews" are comic oriented, its purpose is to make people laugh. Laugh at the review or/and laugh at the fanboys that can't see that he is joking. Using a common internet term, he is "trolling".
However almost all his negative criticisms are indeed true (from the games i also played), or reflects his personal opinions on gaming (like, all JRPG = Bad). When he doesn't like a game he completely ignores the good points and focus completely on the bad ones, and if that game is big and has a lot of fans its even worse
Anyway, all games have flaws, and Uncharted is no different. There's nothing wrong in expose those flaws, on the contrary. No one should be upset about that.
