You're right, we don't all agree. Much as I love my Jeep, if I had to choose between being able to crawl around on the rocks and leaving a decent planet for the future generations it wouldn't be a very hard choice.
BUT we don't have to make any such choice. It is well within the capabilities of the auto industry, even FCA, to product an all-electric "Jeep". If properly designed, it could be FAR BETTER for off-roading than anything currently on the market. (Tesla has already shown that an all electric sedan or an all electric SUV can blow the doors off the competition in the luxury market. They're well on their way to doing so in the mid-range sedan market, too.)
Think about it: get rid of the entire drive train (gas tank, engine, transmission, xfer case, drive shafts, differentials) and just put one motor on each wheel and a big battery under the floor (with a bit of armor). Very low center of gravity. (Get rid of the brakes, too, if the regulators will allow it; regenerative braking is fully capable of locking the wheels on any surface.) That's a LOT fewer parts to break. Software would control the torque to each wheel independently, no need for lockers. And the available torque from an electric motor makes a diesel look wimpy (top of the line Teslas have over 900 lb-ft) and it's all there at ZERO rpm. Plus the power delivery is super smooth and controllable, no waiting for the engine to rev up, no worries about being in the right gear, it just goes. It's hard to describe how much nicer an EV feels if you haven't driven one. And while that's nice on the highway it would be even nicer on the rocks.
I don't expect FCA's upcoming plug-in Jeep to be anything near that good. They'll probably just put an electric motor in a Wrangler chassis and probably keep the gas engine, too, making the whole system doubly complex. But as soon as someone builds an off-road capable vehicle designed from the ground up and an EV, I'll be first in line to buy it.