That's extremely silly. drunk, inexperienced, and elderly drivers are all human drivers. You can't just exclude them from your baseline because they are not in perfect driving form.
Let's also exclude young drivers, stupid drivers, distracted drivers, drivers who never took driver's education classes, short drivers, barefoot drivers, glasses-wearing drivers who forgot their glasses, and one handed drivers.
The insane variation of human drivers is exactly why AVs should ultimately bring vehicular deaths down..which is the goal.