Interesting you choose to sidestep the point. Mandatory seatbelt laws are illegal -but I gather you have no problem with that. You do, instead, seem quite pleased with the prospect of forcing others to do what you feel is best for them. Speaking of helmets and the wearing thererof; I notice with no little amusement that whether or not anyone chooses to wear a helmet, I have yet to see any seatbelts installed in any make or model of motorcycles manufactured, past or present. So, motoring about in a cage surrounded by glass and steel is so dangereous that everyone should be forced at gunpoint to wear a seatbelt -but no helmet- to save them from harm, but riding My scoot with only the clothes I freely choose to wear is so much safer that I should be forced at gunpoint for My own protection to wear a brainbucket (helmet) -but no seatbelt. Quite sensible, yes.
Incidentally, I rode a bicycle for over thirty-five years without a helmet of any kind (unlike the feel-good laws of today), and I am still alive. Although I gather from the likes of you that since I did so I am now deceased.
Not Bloody Likely.
Actually I haven't weighed in yet with my pro or con opinion of the laws.
You are jumping the gun.
But whether I favor such laws or not, I am curious about your assertion that the laws are 'illegal'. I'd be interested in more detail on that.