Meh.
I think some of these celebrations are just plain embarrassing and idiotic. Whatever.
Sometimes, you see player make a tackle for a two-yard loss and behave as though they just won the Super Bowl as a result too...doesn't even matter if their team was down 20 points at the time or if they wind up losing the game, apparently.
I'm not really a fan of end zone celebrations, but at the same time it's a non-issue with me. If that's what they want to do, then let them.