The Canucks don't dive or embellish more than any other team. It's a perception that was fostered by the CBC and picked up on by Claude Julien because it favoured his team.
In 2011 Canucks had a pretty devastating PP and as a team were very disciplined in not retaliating. As a result, down the final stretch of the season, the officials became gun shy w.r.t. putting the Canucks (and other fast, skill oriented teams such as Chicago and Tampa Bay) on the PP. This trend continued into the playoffs. Recall that in game 7 of the Bruins - Lightning series, after Tampa scored a bunch of PP goals to win game 6, there was not a single penalty called in the final game. The refs put their whistles in their pockets to the decided benefit of the Bruins.
As the Sedins in particular took more and more abuse, the team as a whole started trying to draw attention to the egregious fouls. Call it embellishing if you want, but one thing is very clear; the standard of enforcement for obstruction related fouls and even moreso, for after the whistle crosschecks, face washes etc. became extremely loose. How does an official skate right by Brad Marchant while he punches Daniel in the face 7 times without blowing his whistle?
Take the infamous Kesler "chicken wing" play that the CBC went on and on about. Kesler didn't "clamp" his arm down on Weber's stick - all he did was turn his body so that Weber's stick - that was already up around his chest, was trapped between Kesler's arm and his chest. That's not really embellishing - Weber's stick was there, and was being used with significant leverage. Is WAS a hook. All Kesler did turn his upper body. There are far more egregious examples of diving and embellshment every game, but not every game has the opposing coach and the CBC dissecting every play on national TV.
The CBC, Barry Trotz and Claude Julien can talk all they wan't about respecting the game. Dumbing the game down to the benefit of the less skilled teams that rely on stifling clutch and grab tactics is not good for the game.