Well, the two Japanese guys that won silver and bronze in the men's Sochi half-pipe were 15 and 18
respectively.
Except for a few outliers like Louri and Shaun, the older tended to finish further back, but I don't think the age/result correlation was that strong. Would be interesting to chart it. There was only one 15 year old (Hirano) (2nd/39) and one 17 year old (O'Connor) (15th/39.)
I think the world is moving into an opposite age-claim. But I don't think it's such a good world to be in, where the less time one has spent on the planet - the higher the expected result. It shows a perilousplanet. Then again, this is just conjecture. But someone did mention a number of months back that freeskiing is becoming more like gymnastics, and I think that's true.