Repeating myself....
The point is not that we rec skiers should use a wide stance - the benefits of a narrow stance for most of our skiing is one thing we all seem to agree on. The point is that the moves alpine racers make often are quite irrelevant to rec skiers despite the ambit claims of some ski teaching systems.
I think you're completely wrong. Skiing is skiing, you just need to understand the context in which the skiing movements are being made. Knowing the "why" will help you assess the utility of what you're seeing. Most of what you see in a typical SL race is completely applicable to all recreational skiing. These movements should be the basis for all good skiing. Not sure why in the world you would think that their moves are "quite irrelevant".