Ugh that introduction man. Discussing issues about artistic integrity gives me a head ache when most people who discuss them don't even know what art really is. Kojima is not an artist, he's a designer. Those are two very distinct roles. Just because a concept artist or a writer worked on the game doesn't make it art. I can create an illustration for a book cover, that's not art, it's an illustration. Go read a book or go to a gallery once in a while.
The guy said: "You often make the mistake of assuming that you're interpretation of art is the correct one and that things should change to fit your views." He is completely right. Can you even explain to me why you think that game is artistic and then why it should be criticized as an artistic work? I don't think so.
So Patrick (and many others) are "wrong" in their estimation that games can be art, but you're also siding with the tumblr user that he shouldn't claim that his interpretation of art is the "right" one? What makes yours the right one?
Hey, guess what? Both games AND illustration can be art. Guess where they teach courses on illustration, design, and many aspects of game development? Art schools! Museums have displays featuring things like illustration, comics, and games, so by your very demand of "go to a gallery," shouldn't that automatically validate them?