Sounds more like a type of mental illness.
As much as I'd like to think pd could have addressed this in another, not such an extreme manner, I guess this is a symptom of the 'litigation' (American?) society today.
Basically having to allow for the lowest common denominator. Has to be a degree of persons responsibility? If your kids are playing with a wheel, then parents should be ensuring they set it at a level kids can play safely, or not allow them to use it if they cant be bothered to observe and work out settings that are safe for them to use.