To be honest, the Stun story is dire reading. A supposed "whistleblower" bemoaning the fact that the firm did not train Cowell before delivering the bike. Well, it has roughly the performance of a high output 250 motocross machine, and no manufacturer trains the buyer upon selling them one. Yamaha didn't insist on training me before selling me my sub 10 second V-Max, and I'm pretty sure Aston Martin didn't give my neighbour any training before selling him a DB11.
The same is true for manufacturers of knives, shotguns, hammers, anvils, piano lids, or even toothpicks (100,000 Americans seek medical treatment every year for toothpick injuries) so why would this product and Slimon Cowell be any different?
Is suspect the story is chinese whispers reported as a real thing.