It is my belief that the majority of incidents are from the rider's reaction. If a rider understands what their motorcycle will do, or how to make their motorcycle perform, that reaction becomes more advanced - or, in many cases, learning to NOT react. Hearing a turtle, tar snake, squirrel, bumper, gravel made them crash - NOT reacting to many situations would make the rider better off. Repeated behavior and time with the motorcycle will make this more second nature, rather than it being a thought process. If you eliminate any possible outside distractions there is more focus on the performance rather than the reaction.
It isn't always about racing. It's usually about honing skills and learning how to make that motorcycle perform.
Nice thread