You really failed miserably with that "disprove" part.
You have posted the first clear and cogent explanation of how the misunderstandings happen. At least the first one I have ever seen. I appreciate your post precisely because it explains teh disconnect that has so frustrated those of us whose lives have been intertwined with autopilots of various types.
You do bring up a very good point. As all those technologies advance we need to have vehicle specific training (similar to type ratings in aircraft). Driving the current Model S or X really needs different knowledge than does a Toyota Corolla. Driving a Leaf could use some training too. Come to think of it a Ferrari almost never could be given to someone who knows Chevy Nova while expecting good results. Yet the only distinctions commonly in use for road vehicles are weight-related and commercial vs non-commercial. Should that change?
I think you've convinced me that Tesla should offer a mandatory, at least one day, course in use of the vehicles prior to turning a new driver loose. Accidents should go down.
In aircraft such short courses have ben used in a wide variety of situations and produced lower accident rates and happier pilots. Why cannot we do that with Tesla?