It is a stupid cost cutter. I can reverse a car no problem without a rear wiper. Without sounding condescending if you can’t reverse a car just using wing mirrors then maybe your reversing isn’t as good as you think. Folks I’m not being cheeky saying that.
Some people with medical conditions don’t need to wear a seatbelt as they struggle to look over their shoulder, there are probably a few on here. I would think they depend heavily on all three mirrors.
Enyaq EV