I don't recall the NHL doing it that way, but my memory isn't what it used to be, and never was.
I think the baseball way is a bit better, as a meaningless late goal in a 5-1 game changes nothing.
The first goal, game tying goals (especially late), and OT goals (which are often GWGs) are better indications that the technical GWG.
But that applies to goals and assists too.
Player A carries the puck from his own end, dekes two players, and takes a shot which bounces off player B's skate right to player C with a wide open net. Or A ices the puck but B beats it out and feeds C for a tip-ins. Or A and B each barely touch the puck before C goes end-to-end.
(C with a hat trick - must be Matty!)