Exactly, we left it mostly up to the manufacturers and they've kind of abused that freedom and made them kind of shit for their intended purpose.

Now in the modern era, with backup cameras being standard equipment on new cars, you can maybe make an argument for them being a little redundant since most if not all backup cameras have some night vision capabilities, but a little redundancy isn't a bad thing, if your camera gets fucked up you still probably want to see where you're going when you're backing out of your driveway to get it fixed.