I don't see the rest of the 23 drivers complaining. Besides, KERS will be used only on the straights, and so would be the adjustable rear wing. They don't have to worry about them in corners, and I'm sure they're capable drivers and won't just randomly push it wherever and cause accidents. KERS was there on 2009 cars and there weren't any problems. And it's just one or maybe two more buttons to adjust the rear wing. If he's already complaining about them, saying "Too many buttons, but well, what to do, I'll have to adapt," then that sounds like a little defeatist attitude to me.