Who made them mandatory? When and where? You have other blind spots, too, and manufacturers know that relying on a camera makes drivers neglect their other blind spots - Skoda cars even pop up a toast notification saying "Look around, is it safe to move?" to try and discourage lazy drivers thinking the computer is a replacement for a brain.

But all this feels like a moot point, anyway. I understood the main argument to be advocating the use of physical controls, not the removal of safety sensors and cameras.