I've owned my late build 2018 since new. Had to replace the front pads (and rotors) a year ago at 25k miles. Pads worn, not making contact on the whole rotor face, making noise - the normal not working situation. I replaced with Akebono pads and OEM rotors. Now, at 36k (by far the most miles I've driven this truck in a year, somehow), the rears are gone with the same issue. I'd say half of my miles are long trips on the freeway, with the rest mixed use of interstate, back roads and surface streets. 3k miles of towing, but 2k of it is all long trips, all with trailers with functional brakes.
Just seems really poor pad life though my last two trucks were on non-OEM pads, so hard to say what their original pad life was.