Elon’s success as a businessman beyond being very good at self promotion is that he’s a brilliant cost cutter. SpaceX exists as it does today thanks to his exceptional ability to make people do great things with the least amount of resources and processes possible. The problem is at this point he has bought in too much into his own myth to the point he’s a caricature of his own self. Sensors are expensive and ugly, so he doesn’t want to use them and his argument is that humans don’t have sensors, only eyes. Which is a fine philosophy if you’re trying to create a system that is as dangerous as humans behind the wheel but I thought the idea was to make something better.