To my thinking the Gladiator would want to be treated "lightly" as far as putting a tow load on it; particularly trying to control it with the suspension. Back in the day a dedicated 4x4 was sprung and shocked to jar your teeth out when hitting obstacles....but they did not sag, sway or shift around. Nowadays a "4x4" is a soft sprung vehicle (non "truck") that has some sort of mechanism to make 4 wheels turn, in some circumstance.
Jeeps are Jeeps and I've owned several but not a Gladiator. All mine were older with a 2001 Grand Cherokee Overland being the newest, a 1983 CJ7 being the last. I have driven lots of the newer ones and rented them as well. I've not come across one that had a suspension that I would strap an RV of any size to.
Going back to the observation John made previously; is that suspension made for "comfort" while 4x4ing? If so it's not going to be good for towing. Much like a Raptor, they can tailor a vehicle to do certain things well and fail dismally at others that they should be OK at. If it were me I would definitely put it through some tests to find out what kind of support and control, or not, the suspension has. Then there is that 3.6 (
) and the frontal area issue.....