I've got an F350 with the 6.7L diesel and I'll be running a WDH on a 2100BH. You could maybe argue it's not needed but it doesn't hurt to put a couple hundred pounds back on the front axle for steering and braking in an emergency.
I have a new 2020 silverado 1500 4x4 with the 3.0 liter diesel and a new 2106ds. Do I need a weight distributing hitch??
I have a 2020 new ford expedition towing 2106ds with 9200lbs towing capacity and WDH made a night and day difference. Power was not an issue but sway and bouncy ride was really bad without it. I originally tried and wasted money on a high end shank and ended up getting a $480 curt and it really performs well.