He's always been like that
change the ranking system for me
change the Madrid surface for me
less hard courts FOR ME
Complete opposite to Federer.
I think it is getting obvious now that Nadal doesn't feel like he will be able to surpass Federer in greatness, and has been trying to change things in tennis lately for his own benefit.
Meanwhile, Roger plays the game and listens to lower ranked players like the great ambassador he is. He was great in 2004 and legendary in 2012, no matter how much tennis changed in between.