there are some 9 and 10 year old kids out there that are better drivers than 90% of the adults in the hobby, i dont think its the 9 or 10 year olds that would be the probelm, they are generally sort of affriad of nitro, and are resepectful of it, its the 16-20 year olds that are the ones that will be the problem, chasing their drunk/high buddies around with them and what not,
to me these things are no different than a duratrax or a traxxas, none of them intrest me at all, but if it helps grow the hobby, all the better,