All brands have a very small percentage of mechanical failures, that become inflated stories on the internet, especially on forums. We can never see what really happened, we only hear what "my mate" said. So without any evidence, I don't really believe this story as is I'm afraid. Something else would have happened, guaranteed.
With today's modern engines, pretty much all serious mechanical failures from bikes to utes to heavy plant and equipment, there's always been a significant contributing factor. A servicing mistake covered up, intentional misuse causing damage, persistent use outside of specified operating parameters. Whatever it is, it's usually conveniently removed from the re-telling, if it was even known in the first place.
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