No. Not at all, not in the slightest. He plays hard, he does the best he can, and he plays with emotion. What's wrong? That he get's pumped up when he strikes someone out? Get serious.
So a player shouldn't clap his hands after he gets a hit, or high-five a teammate in the dugout after he scores to bring his team to within 5 runs? Papelbon goes nuts after a save, last night's performance was hardly earth-shattering, he allowed two baserunners, and you'd think he just won the World Series.
My point is, celebrations should be a part of the game, and I'd love to see more of it. It pumps up players, gets the crowd into it, and makes it more fun. No harm at all, Kilo.