Gretz pissed a lot of Canadians off by moving to the US - and really kicking off the salary escalations that caused 2 Canadian teams to move south, and 2-3 more to almost.
He further pissed off some Canadians by becoming involved ownership-wise with the Coyotes, the previous Jets.
If he actually had anything to do with the Oilers moving to Seattle.. man, that dude would be CRUCIFIED in the Canadian media.
(Yes, I realize this is all perceptions and not necessarily what actually happened or is gonna happen, but it's funny how his name keeps coming up when it comes to Canadian-US hockey relations)