It depends on the kind of weight he was pulling.
His torch cut holes appear a bit oversize, but still sufficient meat for a light load?
My first reaction when I saw the photos was that this guy isn’t hauling any cargo at all ... and is just using this setup to transport an empty trailer.
He had air to the trailer brakes so whats the problem?I dont see any problem except pulled by a brand X product.
There’s no weight on that setup, just lots of push & pull. With the airbrakes working, it’s doable. Not smart, but doable.