They reported 103 mile range at 70 mph towing 5600 lbs. I expect to be towing around that same weight but closer to 55mph. Still, an almost 2/3 range reduction isn't insignificant.
People who read this aren't necessarily going to see that other thread, and people who read that one aren't necessarily going to see this one. It would be far more productive to have the discussion of this video in one place, rather than having to repeat the same comments and make the same replies in two or more places.