Well, two things on that. Firstly, you're correct. Ebert's mind is pretty much made up. You can't sway him from his opinion but you can still have a civilized discourse with him, which is what Penny Arcade made no attempt to do. I believe Ebert's comment and reply to the TED video was civilized. PA only inflamed the issue with vulgar wordplay.
Second, I don't believe Roger is on the wrong side of history nor do I believe his opinion is solely based on his age. I sincerely believe that if he was born in 1850 and as an elder started watching the first films being made, he could admit to it as being art. What we have is a simple disagreement on the definition of art. Roger endorses one opinion; others (like me and PA) endorse another. On Krug's question, are RPGs art, well, I write RPGs and novels and never once did I refer to myself as an artist. I never considered novels art. I consider novels stories. Nick Greenwood, the artist on Amethyst, is an artist. He makes art. My writing is not "artistic" in my opinion, nor do I consider the work in total a work of art.
This is because my definition of art is something you watch and analyze and understand and reflect. I accept movies are in that category but my "obsolete" view doesn't consider novels art. And I'm a writer. Someone asks me, I would call myself a storyteller. I am not going to tell someone they are wrong if they call me an artist, I would just never do it myself. Some people call some automobiles a work of art, I could never see myself doing that. This is just my opinion. Other disagree.
The point I am making is that I would never condemn you or others for having an adverse opinion to that. This is not some hot-button debate. I firmly believe artwork is eye of the viewer and I never could understand someone that purchases an expensive piece of art for the sole reason to own it and not take any fulfillment in its viewing.
So I believe Roger only has an opinion because of who he is, not what he is. Officially, the only game I think really falls into art is Flower. I can accept arguments as to why Ico or Braid could be...and you may have a point, but I would not stand on a soapbox to defend them as art, as I am kinda on the fence on it.
I will not dismiss the opinion of Roger Ebert solely on the basis of his age. He has stood out in defense of films which were not appreciated in their time and has maintained his conviction in his opinion. More often than not, he has been validated in that stance. Is he wrong about his opinion on video games, I think he is, but that is only because my opinion is only slightly divergent from his.
So no, Ebert won't concede his point. You are right, but there was no place warranted to disregard his opinion solely on the basis on the accusation that he is a senile old man unwilling to see the changing winds around him. That is simply not true.