One thing that hasn't been mentioned is that there are quite a few areas in the general Yellowstone area that have "special regulations" for grizzly areas, meaning hard-side campers only! No tents.
The grizzly population in and around Yellowstone has been expanding for decades, and they're showing up well outside the park anymore. Although I've tent-camped in grizzly areas many times, there are places where a hard-side camper is required. So, one more factor in favor of a hard-side trailer. Even if it doesn't offer much in the way of real-world protection, it meets the legal requirement.
Also, there's the weather protection. I've had some nights in tents that were pretty rough, in high winds... Ugh.
My trailer doesn't even have a tent! I just set up a ground tent and sleep in it. The trailer carries supplies that can keep me going with fuel, water, food, etc, longer. Also allows a more comfortable camp. I could easily put a RTT on it, and perhaps someday I will.
Re towing with the two-door Jeep, I found mine quite capable with roughly a 1500 pound trailer, for a three-week, 3600 mile trip last month. My Jeep is a 2012, with the 3.6 liter V6, a manual transmission and 4.10 gears with 285/75/16's (roughly 33") it had good power even on the long & steep uphill grades, I just downshifted to keep the engine revving enough to be happy. Also, my trailer does have trailer brakes, and yes, I highly recommend that! They're valuable on and off pavement.
Regards, Guy