Make what you will of the above article. I personally believe in wearing seatbelts myself, but I also believe in vaccinations. I'm not seeing the distinction you are trying to draw between the two. I don't see one. Seems its likely just your own biases (as we all have them).
So how does a society implement the rule of law if we ultimately have to rely on each individual's ability to make the "lawful" choice? Aren't we treading into anarchy here?