Replying to Ski cross?

Let me start by saying I've never tried it so I have no idea how hard or easy it is and I'm not shitting on it.

It seems like it's way easier than any other ski discipline. Pretty much all the others require years of practice and muscle-memory technique to be pro. It seems like with a few lessons and practice seshes most good skiers would be able to run the course almost as fast as the pros I've seen.
Am I missing something about ski cross that akes it challenging?