It's funny that you should use the foragonal example, epic. That movement pattern has been the bane of my existence lately, and I swear I'd be a season further in my skiing if I'd never heard anybody say "dive down the hill", "project your body down the fall line", or any of the other ways people say it. I'm not into the politics so much, but I'm getting increasingly selective of whose advice I take. It's not that people aren't well-intended or far better skiers than I am; it's more that I choose my coaches based on who I want to ski like, and there seem to be plenty of approaches out there that aren't compatible at all. I hate having to train out movement patterns I had to put a lot of energy into training in.
I agree Dan. It's frustrating when you ski with with people who tell you to ski foreagonal and either you see that they are not doing what they think they are doing, or you see how that move is blocking them. It would be like if you were skiing with a guy who kept telling you not to use any rotary while he was clearly ding it himself. Take what works and leave the rest (but in the moment, keep your eye open and try it anyway).