It's a passionate sport and people do things in the heat of the moment. Take soccer as an example. Probably one of the most passionate sports in the history of sport to the fans and the players. The celebrations these guys do is out of pure passion and heat of the moment. There's nothing wrong with that as long as it's not stupid choreographed dances and taunting other opponants and rival fans. Some soccer celebrations do stick to mind:

Robbie Fowler scoring and then going on to "snort" sideline as if it was coke. He got punished deservdly for that.

And more recently after Lincoln City's manager Keith Alexander was hospitalised and died three times during some head surgery. When Lincoln scored in the next game, the scorer took off his shirt to reveal a get well soon message to Keith Alexander on a t-shirt underneath and then dedicated the goal to him.