I doesn't matter if the Jeep is old or new, Digital or analog. I have had all. The output shaft does not turn. The transfer case is always shifted into neutral.....unless you an idiot and forget. On the older Jeeps, one had to turn the ignition key one notch to unlock the steering but it did not engage any power.. In our 2018, there is no steering lock. No need to leave a key in the ignition thus, again, not power. Towing or trailering is a matter of choice. Do trailer tires, wheel bearings and brakes not wear? And then there is the BS about what to do with the trailer once you reach your destination. The big difference is convenience and that is why the majority of toads are Jeeps and that they are flat towed. Further, the industry average distance traveled per year by motor homes is about 5000 Miles and not all of those miles are towing miles. Given the durability of Jeeps, I suggest the additional wear is insignificant.
Darrell