Were you trying to be sarcastic earlier when you mentioned the tainted part? Because it sure didn't come across that way. Then again, sarcasm is never really good in a message board, unless you're one of those great posters (ClassicHockey, murray, etc.) who can pull it off.
I don't think there are any knowledgeable hockey fans out there who believe in outright Canadian supremacy. It's one thing to believe that Canada is the best hockey nation in the world, and to predict Canada to win. It's another thing to expect Canada to obliterate the competition in any best-on-best tournament we enter. That's not going to happen. Most Canadians now recognize that it's going to be a battle to win a gold at any of the big four tournaments - Olympics, World Cup, World Championship and World Juniors.
Sheer domination by Canada in a major international tournament has only happened once since I've been watching hockey - the 2004-05 WJC. That was due to three factors: a) the NHL lockout leaving Canada with the ability to ice its best lineup; b) the strength of Canada's 1985-born players (1985 might be the best year for Canadian talent since 1969, which produced Sakic, Turgeon, Shanahan, DesJardins and Blake, among others); and c) the lack of depth in 1985-born talent in the other hockey powers.