Having never done any winter sports before I have self taught myself to snowboard this winter in the French Alps. I have seen numerous accidents, been hit by skiers, seen all sorts of people on ski’s and boards have mishaps, not be in control, and be inconsiderate and considerate in equal measure.
There are all sorts of nobs as well as nice people having a nice time. More than any other sport there seem to be an element on the slope who have the attitiude that this is their annual week of skiing / snowboarding and no-one is going to get in their way / slow them down. I have also seen snowboarders stop to help skiers / kids who have fallen, and some skiers stopped to see if I was ok after a fall. My friend a good skier also got smacked into my a bloke on blades, so it all goes on.
So in summary, its nothing to do with boarders vs skiers, its just that some people are idiots and the perceived pressure of trying to pack as much as possible into your one week of sking that you have paid lots of money for creates a sense of entitlement in some people I think. The whole activity is generally a recipie for disaster if you look at rationaly, and some people just don’t take it carefully enough.