An adult smoking a cigarette in front of a kid, does not put the kid's life at risk (unless you want to go into the whole second hand smoke issue) that I don't believe is the point you are trying to make. Eye shot and lung shot, two separate scenarios.
You can find article after article of texting while driving accidents on the Internet. The amount of accidents and deaths are shocking. Tell the parents and loved ones of the innocent people who have had their lives snatched away from them, that this is just no big deal.
It just people making a mountain out of a molehill.