Here is my theory. The people who get upset that people don't ski outside of the park, most likely suck in the park. They then get upset that they can barley get to the end of a flat bar so they channel this anger at people who are decent at park skiing, and flame them for their lack of style/technique on other aspects of skiing. Ironically most of these people who flame the "park rat" most likely not only suck at park, but also suck at their "real skiing".
It is funny that you guys think that pro "park rats" like Wallisch, Henrik, etc. are not good at real skiing. I am 100% sure these riders are better then anyone on this site (who is not a pro) at any form of skiing. However instead you guys compare this said group of "park rats" to some of the best big mountain skiers in the game like Tanner, Candie. Are you guys seriously that fucking retarded?
Thats like comparing Wayne Rooney (a soccer forward) to Van Der Sar (a soccer keeper) on the basis on their goal keeping abilities. Obviously the keeper is going to completely dominate the forward, even though its still soccer. These "park rats" simply decided to specialize in park skiing, while the other focused on other aspects of skiing. It doesn't mean Wallisch cant ski a technically line, just like how Wayne Rooney could prob save a few shots as a keeper. But when you compare them to the best of the best they will look minuscule in comparison. That goes for all levels of anything from novice to expert.