As I been following this thread, I've noticed a few issues that may result from misunderstanding the needs of fellow snowriders. By the way, I'm a skier. My teenage children, who are avid skiers, board sometimes. By watching them, I've learned some of the different needs they have when boarding.
1) When boarders pass you on the flats, they're not trying to be rude. They're trying to keep up their speed to avoid coming to a complete stop. They can't skate like skiers to regain speed and hopping becomes a tedious and exhausting process. So, when boarders pass you on the flats, move aside and let them get to the next pitch. If they do come to a stop, offer them a pole.
2) When boarders sit down on a pitch to wait for someone or to rest, again they aren't trying to be rude. They need an incline to stand up and to get going again. Standing up on the flats becomes arduous. That said, both skiers and boarders should stop in places where they won't be in an uphill skier/boarder's blind spot.
3) When boarders get off the lift, they have to stay balanced on the board before they get to a spot where they can buckle in. Sometimes skiers inadvertently crowd boarders who are trying to get to the buckle up area. I try to give boarders extra room when unloading.
4) Less experienced boarders often scrape off the snow. I doubt they're doing it to be obnoxious. Just as less experienced skiers can chop up the snow when they're nervous, less experienced boarders often resort to side slipping.
As boarding has begun to mature as a sport, skilled boarders can be a beautiful thing to see. They look like they're floating across the snow! I suspect most perceived problems with boarders occur more frequently on beginner and intermediate terrain where less experienced people are trying out their skills. And sometimes both skiers and boarders get in over their heads on steep chutes. That's all just part of sharing the hill.
Let's Judge people by their actions, not their choice of snow sliding equipment or their ages. I've met wonderful people of all ages and snow sliding persuasions on the slopes. Happy skiing.