Well for one thing, I'm not really a canucks fan, and I certainly can't speak for the entire organization, but people probably harp on the moore hit on naslund for the same reason people still whine about the bertuzzi hit... because they're idiots. (and it wasn't a legal hit by any stretch, but that's beside the point)
The fact is, Moore injured Naslund with a dirty hit, and retribution was bound to happen. This isn't a situation exclusive to the canucks either, it happens all the time. On this very site where people ***** about how bertuzzi is an animal all the time, Donald Brashear is being idolized because he went after Kasparitis after a dirty hit he threw.
Bertuzzi did something that many players have done before, and a freak injury happened to Moore, and that's a shame. But to continuously pile on Bertuzzi years after the fact because of this one incident, not to mention the ridiculous comments people make about how he's a "brain-dead neanderthal, shame to the sport blah blah blah", is just showing pure ignorance.