Don't complain to much seruzawa. Turning loose these would be candidates for Darwin awards on 700 pound bikes tends to act as a modern mechanism to clean up the gene pool. The same arguement would also apply to those foolish enough to hop on the pillion behind them. VWW
This guy coulda hit gravel, slipped on oil, been clipped by falling rocks, frickin' got hit in the face with a bird -- you don't know how he lost control, especially on a mountain switchback. Quit acting like you're the gods of two wheels.
And besides, we all know squids on sportbikes are more dangerous than weekend warrior crusier types, anyways!
However I still bet it's better than even odds that it were operator error that done the deed. How do I know? Personal experience. All my crashes have been my own stupid fault. Even the one that the police investigator said I wasn't at fault on. And no one was ever harder on me after a crash than myself.
I am glad the guy survived and he'll be a much better and wiser rider from now on in any case.