I understand your skepticism 100%, but I suspect you might change your mind if you, say, rented a car with it for a week. It's definitely a net positive for safety, and it probably costs the auto maker less than the seat belts (literally).
I've owned cars with backup cameras since about 2014. I still mostly back up the old fashioned way, and really only use the camera for very tight situations where a few inches matter.
I've owned cars with backup cameras since about 2014. I still mostly back up the old fashioned way, and really only use the camera for very tight situations where a few inches matter.