This is all true. But it’s also true that humans just suck at such things, regardless of testing and skill. Elon says his new Tesla hardware 3.0 is capable of processing 2,000 frames per second of data on autopilot. If your brat kid distracts you and your eyes leave the road for just a fraction of a second, you’ve become far less safe than the automatic car that is continuously processing data without fail. And the reality is that you are continuously distracted while driving, and your eyes frequently leave the road. You also don’t don’t even have the field of view or the variety of sensors that the car hardware does. The car sees 360 degrees not only in the visual spectrum, but also using LIDAR, radar, etc. The Tesla has sensors to even see underneath the car ahead of you. It will predict and prevent side impact collisions that were never even in your field of view. Etc.
Humans simply aren’t as good at this stuff as computers. We need to accept that. It will save tens of thousands of lives per year.