Meh, many people buy used art and the original artist never sees a dime. I agree with him.
At the same time, I think if a game is to have supported online, I can kind of understand them wanting to charge $10 to people buying it used, to maybe help support it...I don't even know how that makes sense in my head, as I type it I begin to realize how ridiculous it is. At any rate, if any games were to have this, I'd say online games (which I think is the plan?) and offline games it shouldn't matter because they already made their dime.