Until some bright person says "Well, what do you do in your game?"
Stuart: "Well, you play the role of an.."
Buyer: "Wait, wait...you play a role? So it's a Role Playing Game?"
Stuart: Well, yes and no. I mean you do take on the personna of an adventurer trying to rid the world of evil, but I didn't want to pigeon-hole it."
Buyer: "But it's a role playing game?
Stuart: "Well, yes...but..."
Buyer: "Why don't you just say so?"
Or how about the store manager who just wants to know what category it belongs to?
I think Pundit is on the right track when he says if X wants to be a role-playing game, great! But as an RPG, it sucks. Why do Story Games want to be called Story Games? Because they know what's what. They understand they their games are fundamentally different from what the term RPG has come to mean.
I, of course, couldn't care less. I'll just be a plebeian gamist/simulationist.