i typically agree with your posts, but that last part is fucked.
regardless of your little beef with this kid, core strength is ridiculously important in not only a lot of sports (skiing included), but as a contribution to an overall in-shape body. as someone that's really passionate about fitness, has helped many friends lose tons of weight and gain muscle, and has personally gained about 40 pounds of muscle in the past 5 years, its fair to say im not some "skinny bitch" trying to get a 6 pack all day. but at the same time, i work out my core everyday along with my other lifting regiment and wouldnt have it any other way. because im a naturally slim build and lifting makes me more cut than huge, i have toned arms, legs, and back, so why wouldnt i treat my core the same way?
core strength might seem like a novelty to you, but being able to squat 500 pounds seems pretty useless to me outside of football and other high-impact sports. to each their own i guess, i just wouldnt bash on everyone with a 6 pack.