Does Yakupov DESERVE what is likely coming to him? Absolutely not.
Does Yakupov need to realize that the NHL is a kind of fraternity wherein normal-world rules don't generally apply? Absolutely.
You can't argue that just because he showed some emotion he doesn't deserve to be punished. People were obviously pissed with him after that goal against the Kings. Then he had some pretty similar Ovechkin-like antics after scoring against the Coyotes and someone went after him (I can't remember who, I am pretty hung over.. Derek Morris maybe?) If you showboat in the NHL, people will not be ok with you shitting all over their pride like that.
On a personal level, I absolutely agree with you, conscript - I think that kind of excitement from a rookie is just great. But understanding the NHL and how players will react to that kind of shit, I think it's a dumb choice by a kid to do it twice.
EDIT: Also can anyone find me the video for this Yakupov/Duschene incident? I can't seem to anywhere.