I think @T-fromTO hit the nail on the head. Being a life long tall/thin guy, there seems to be an animosity towards my body type by those who fall under "buff' category. I remember in high school winning pull-up and sit-up competitions in gym class and the big football players who always bragged about how much they could bench-press being pissed that I doubled their scores.
I think people who would otherwise appear to be way stronger than Nate are jealous. However, he gives us thin guys hope and makes everyone re-exam certain paradigms concerning the ideal body type of a slalom skier. Unfortunately, I can no longer blame my lack of performance on the water on my lighter body type!
Regarding personality, he's obviously a reserved, humble individual who fell in love with skiing and got addicted just like the rest of us. @Killer, you don't have to be loud to advance a sport; just look at Gretzky (who similarly took a lot of heat because he was so damn good and a relatively small player).