Bed length is just a personnel preference. I've owned several of both pulling heavy and lite GN/5th wheel/bumper pull trailers and carrying heavy truck campers.
I prefer a crew cab truck and I prefer to park the truck in my garage. For me that means a truck short bed.
Some folks with a short bed may use a manual or a auto sliding hitch.
Some folks with a short bed may use a Andersen hitch system or the same style Pullrite 2400 model.
And some folks use the Reese Sidewinder pin box with a regular 5th wheel hitch.
And some new gen 5th wheel trailers have a rounded/notched front corner profile made for short bed owners.