Yeah, this is just another bad false equivalence. No player really has a problem celebrating a big goal, especially when there is legitimate time left on the clock or its a game changing goal at any time. The problem here was the game was effectively over and Grieg decided to hot dog/rub it in with an EN clapper with mere seconds left.
The other bad one is comparing this to Dale Hunter of the 1993 PO's. The problem here is that nobody in this instance was injured, it was a first time event for MO, and MO didn't knock out a star player intentionally during a playoff run (although to be fair, I believe Turgeon did return eventually?).