>The analogy only illustrates the parent's point. Most licensed drivers have been doing it for years and are still terrible drivers, because they never grasp the intricacies of driving — smoothly accelerating and decelerating, smoothing out corners, anticipating light changes, gauging merge distances and timings, using mirrors well, ensuring cars get by when making a left turn in an intersection, etc, etc

This is not true at all. Most drivers pick this up. You only tend to see this with beginning drivers and it eventually becomes better. The overwhelming majority of people learn how to drive and they learn how to drive quite well.