I think they just mean beginners in general.  I think a skier doing the "snowplow" pushes a lot of snow too.  I mean look at the name of the move.  To their credit, they do push the snow to the right and the left, whereas beginner boarders usually push to the downhill side.  Yeah, OK, newbie knuckle-draggers DO push a lot of snow off the trail and it IS annoying for everyone.  But also consider the following:

1) You Rowan certainly do not push snow off the trail since you are not a nub.
2) If these guys are so "hard core" shouldn't they be skiing parts of the mountain where beginners dare not to tread?

LOL, when I am on a lift with skiers and they start complaining about snowboarders, I just join right in and agree with them.  They totally don't expect it.  By the top of the lift ride, they usually have my respect, and if not, I just ride off the lift, smack my back foot into my flow binding, pop a 180 stalled butter finishing with the nose pointed straight down the fall line, ride flat base for a few moments to gain speed, then set an edge and leave a carve trench so deep they probably don't know how to ski over it.  LOL.  That'll learn 'em respect!