While your post is factually correct, it is logically inconsistent. If the standard for safe driving is complete and total sobriety and 100% motor control, there are many people who are on the road today, completely sober, who need to lose their license permanently. I have better reflexes and reaction time after a couple of beers than many people do when completely sober.
Either its safe for me to drive or they need to be off the road. Which one is it? In this politically correct country of ours we refuse to make this important distinction.