I think you guys have missed the point. He is a game developer in its purist form and when he speaks here, it is from somebody who is in a position that designs the rules and function of the game. What can somebody in that position learn from movies? Nothing.
Graphics
Music
Art direction
Plot
These are nothing but enhancers. If this was a restaurant the game design is the main dish and the rest of those are appetizers. What he is saying is that there is a growing trend where the current industry wants to sell you the appetizer before the main meal. Games are being sold on everything but being a great game. The main focus of every video game should be being a good one, with or without appetizers