It’s disingenuous to list towing and range at their max expected values side by side. Range will drop to less than half when towing even a load far less than the max. Given the ubiquity of gas stations and the speed of refilling an ICE, the fact that fuel consumption more than doubles when towing isn’t the end of the world. For an electric truck it’s a much bigger issue.
It doesn’t seem unreasonable to suppose that the base truck towing 7,500 lbs might have a range of under 100 miles.