It's a "brave new world" where somebody can anonymously upload a video of somebody else with the sole intent of publicly ridiculing them & having a go at them.
The YouTube uploader is the classic anonymous 1 post wonder.
Everybody has to learn kiteboard at some point .. is it a bit harsh making a video of somebody learning, naming them, calling them an asshole and then publishing it? Grown up bullying?
Maybe the guy has been a menace for years, I don't know. Just the motive of doing this video seems to say as much about the uploader as it does about the guy in video.