To begin, I don't see the need for ANY of these post-game interviews. If you want to show the winning team partying, that's one thing, but does anyone want to see the losing team have to be publicly angry on TV for the world to see? Odds are they repressing some serious anger and frustration every time they deliver one of these, because if we could actually see what they were thinking...it wouldn't be safe for TV anymore. I'm not quite sure why these need to occur in the first place...but that's the reality of the situation.
On the other hand, I can't say I feel much sympathy for the backlash against the Panthers quarterback right now. This is not only because he's a world famous athlete that makes millions, but the fact he's made his reputation on being the guy who "still knows how to have fun" and is "playing the game like a little kid again." All of that might be just fine (though a little too flashy for my taste) but that means that, when your team loses, you're going to need to grin and bear it with the same level of "fun". It's really really easy to celebrate and party when you score; little kids do it all the time. It's how you respond when you lose that makes the difference and the contrast between the two is even more pronounced. If you're calm, cool, and professional during a win, you could probably get away with a three minute post-game, post-loss press conference because that's your brand. If, however, you're always providing a show...you'd better have one ready when things don't go your way. As Aladdin once said: "you want to be a genie, Jafar? You got it! ....And everything that goes with it."