Do you need a permit to ride a bike or scooter down the block for fun? Many head injuries, blunt force trauma injuries, and casualties have come from this.
Do people need to eat fast food for breakfast lunch and dinner? Food is a necessity that we must have to survive. But those will just clog your arteries. There are other foods that people can get and can also be affordable. And won't kill you as fast. Or cause diabetes which is another expensive long term health issue.
Although I do agree with the point of regulation, I don't think it is feasible. Humans are stubborn. You can tell them what is safe and what is not safe but will they listen?
Back to personal health, how many times have we been told to eat health, don't smoke, and drink in moderation (1-2 drinks daily). But how many people actually follow these guidelines every single day, every single year? On the box of the RC there was most likely a warning's and guidelines because every single thing you purchase these days have warnings.