If they had a Kukje engine option for the truck part of this equation, I’d be on board. Until then, I’m sticking with the reliable, 2020 Tundra and figuring out the compromises.
Just for point of reference in terms of vehicle towing capacity vs trailer capacity & weight. From about 2014 until late last year I used a 2014 GMC 1/2 ton supposedly rated to tow up to ~9,800lbs to drag around that Kaufman 10K 22 footer.
When I purchased the Kaufman I sprang for a couple upgrades that don't seem to be available anymore - one of them was decreased span distance between crossmembers. Because of the tow capacity of my truck and how heavily the trailer was I did sacrifice some overall capacity with that combination. While I likely did slightly exceed the total capacity of my truck at times with hauling the wife's 2000 Disco II off-roader I honestly never really missed the theoretical reduction in hauling capacity.
Ended up selling the GMC to my mechanic after it ate a transmission (known first year production issue) and the AFM/lifter's decided to exit the conversation. Right now I am using that Kaufman with a 2013 Toyota Sequoia with ~7600lbs tow capacity. Even with the reduced capacity of the Toyota, weight of the trailer & having sincere loaded the rears of the BX I'm still well within rated capacity for the combo of the Toyota and the Kaufman. Is it ideal? - No. Do I have to do a bit more manual shifting on grades when bumping closer to total rated towing ability? - Yes. However, for my relatively limited yearly use around town it does well enough and I'm set up for when the kids get out of high school and I can get another truck.
Point being, definitely run your numbers regarding what you can tow with your vehicle and the trailers you are looking at. However, so long as everything is within ratings, don't get too hung up on having a trailer that is rated for more than your vehicle can tow. I happily traded some overall capacity for a trailer that (for me) is pretty much bombproof, tracks like a dream and has just enough flex to tow beautifully without being obnoxious.
Again, everyone's mileage varies, but I would suggest going over-rated on trailer carrying capacity.... or at very least try not to go through 3 trailers before finding your Goldilocks piece of equipment. Best luck!