There is a special place in hell for those people. My 11 Dakota I just bought still has the featureless OEM radio in it thankfully. can't decide what to replace it with. A double din needs some metal chopped out to fit, been looking at one of those Boss single dins with the floating screen but some say that the column shift may touch the screen.Me too. I had to spend a lot of money restoring the factory wiring in my (used) Challenger. Some bozo cut up the wiring harness to the stereo and amplifier to install a Kenwood unit. (Very poorly, I might add.) I have no good words for the person who did this.
There are plenty of conversion harnesses available (and cheap) so there is no excuse to butcher the factory wiring. For anything!