Your response to 4 is, like, everything that frustrates me about this silly debate over art and games (and art as a whole, for that matter). What is important? What is worthwhile? Blah blah barf! It's all a bunch of bullshit to me. There are no "art games." You're basically just glorifying the role playing aspect of a game and saying it somehow makes it more important or meaningful if it makes a social message. This is the same silly reason modernists used to justify replacing interest and technique in painting with philosophical mumblings and paint splatters.
Forget about the word "art" and judge a game by how much you enjoyed it. None of these "art games" would be interesting to people if they weren't fun in the first place, so it's just adding pretension to say they're superior to this or that because they somehow mean more to you. Why is a story about a bunch of space marines somehow less relevant than a story about a dude who can rewind time? What if the writer of Gears of War released an artist statement talking about his war experiences and how they informed the game? It doesn't matter. If the game is good, it's good. If it's not, it's not. The reasons have nothing to do with why it was made or what allegory it might represent. Tolkein made this same argument about fantasy writing.
People who make things are artists. However, art is useless. Thus, the label doesn't matter in the slightest. Call yourself, or me, or Jonathon Blow whatever you want. We all make different things, different people enjoy them in different amounts. None of them have any degree of "importance."
Josh-B
Maybe I'll get it when its super-cheap on steam. Even though I could spend that much on a decent length game than a two hour movie. O WELL