He made announcements like that in the past. He's young, he's surrounded buy people who tell him exaggerated things about his value and therefore he sees himself higher above many things he should be dealing with. That's natural for his situation, but at the same time, the reactions that will come back from the Turkish supporters will be natural. Us Turks are emotional when it comes to nationalist issues -especially about sports issues- so Kanter will taste a bite from that cake. If he cares about gaining appreciation in his hometown -although I definitely think he does not judging by his mood to route his career- the only way is through supporting the national team for whole of his career. Okur once refused to come and he became a traitor in the eyes of many Turks without delay.
I think this is being too hard on the star players. They have individual careers to take care of, on which they'll build their whole life. And hometown crowds won't have much real impact on those careers that's for sure. Same for Enes, he'll have to take care of himself. That includes watching out for black-hearted exploiting dickweeds up from his manager to the people hw sees the least. But, both Enes and players like him that suddenly looked like an acehole in the public eye must feel the necessity to erase that image, gesture them, make them feel like you always care about the NT and will support it whenever possible. Otherwise, it'll be one hell of a negative kharma on ya pal.