Relative to other sports it doesn't require much skill that can't be easily quantified. The person who can produce the most Watts over the required window is a strong favorite. I assume that doping simply makes a difference in a way it doesn't for skiing or soccer, and probably not as much as even swimming or running.
Skijumping has routine cheating with clothing that gives too much lift by being thicker than the regulations.
I mean, hard for me to regard this as "cheating" worth taking seriously. Unless those clothes have little propellers in 'em. :)
Why not? Its a big difference whether you go ski jumping in leggings or in a wingsuit. Obviously the difference in reality is less, but the principle stands