I think you miss the point. Marshawn Lynch a year ago or so who didn't want to answer any questions so his answer always was, "I'm just here so I won't get fined". It seemed silly, but he stood by his principles and therefore, it was hard to criticize him for it.
However with Cam, he was so in your face while winning. Did whatever he could to get under the other teams skin, and while winning, while I found it obnoxious, he earned the right to be that way.
So now, after losing, don't go into hiding. Don't totally tuck your tail and hide. Wouldn't you rather see a guy win graciously and lose graciously?
Go find Ron Rivera's interview after the game. This is how you handle a loss.
So great, you say he was affected by the loss. His immediate reaction. However now, a few days later and he stands by his comments.
Just my opinion, of course.