There are a certain very small set of gamers that are desperate for validation from the critical arts community. So when something like Braid, or Journey, or name any indie darling of the last couple years comes around they overly prop up these creators as creative geniuses. Even though dudes (or very small teams) making individual games on their own has been around since gaming has been around. Not to mention there is as much "art" involved in making a coin-up game, as a pinball game, or any kind of game. It's just stupid. And its an insult to all the other people out there making games.
For what its worth I like Braid. I thought it had a neat little puzzle mechanic when it came out. But that's it. Its no more amazing than any other decent to good game that came out in my life. So when somebody tries to elevate it to Citizen Kane level, its a bit weird.