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 used to be ornery about this but having a camera mounted on the back of the trunk that can see all the way down both ways of the aisle is actually a huge boon when backing out of a spot. Especially if I am parked next to something that is taller than my golf, which is most vehicles.
like a vehicle touching a body in a speed of 3/4 km/h and the kid shouting or stepping away? or worst case your motion sensor beeping?
how much the conversation diverts on a commentary about someone not wanting a car shipped with an OS capturing telemetry even of farts on the right back seat
Backup camera are insanely nice. Modern cars give you things that even great awareness won't give you. The bird's eye view you get with multiple cameras is sheer magic.