Anytime you're in reverse, you're at fault for anything/everything. That's why emergency vehicles hit the spinners anytime they reverse, if the spinners are lit then it's other driver's fault.Unplug it and see if the Jeep still turns on, that'll tell you real quick I don't think there is any legal requirement to have the camera, just that manufacturers install it from the factory. Could get boned in an insurance claim where you back into something though.
It has to be expensive.talk to a guy at a stereo shop and they will tell you what you need to do. there is an aftermarket box i forget its name that plugs into an aftermarket radio to receive input from the computers on your jeep to display stuff like trail pages climate controls aux switches etc. and yes as of 2018 backup cameras are required by law same as air bags do not remove it you will have a bitch of a time reselling it.
I never understood cheeping out on a vehicle's radio. You will spend potentially thousands of hours in a vehicle over the life of the vehicle so the cost of the upgraded radio turns out to be penny per hour of use. Then turn around and buy a $5 dollar cup of coffee.