You’re aware that by law most cars after like 2015 have to have a backup camera in the US right?
If it is broken they are literally breaking the law by not fixing it.
Yes, you can have your mirrors and rearview but the camera removes your blindspots that those miss (you know things like a small child that is behind your vehicle). It’s a critical safety feature that is broken and needs to be fixed.
That’s correct, NHTSA required it federally on May 1st 2018. I may have mixed up some local laws or regulations that happened in 2015 (when I bought my last car they mentioned that all their cars were required to have backup cameras)