you guys have to understand that filming rollerblading/skateboarding/bmx is a good 200% easier than filming skiing. Everything is going on at much slower speeds, nice weather is a lot easier to come by, location diversity is always a plus because you can do any of those sports anywhere really. Its a lot easier to post up at some skatepark with a tripod than it is to do laps in a below zero temperature snow park that expands over a few hundred meters with wind, cloud and a lot of other people around.
have a look, if skiing would take place in the same circumstances as skateboarding and rollerblading we would all have edits like this instead of the ones we do now
not sure if im making any sense here, pretty much in a haze right now, hope you get the point though