I don't think this is a failure of electric trucks, it's a failure of this specific design.

Look at the F150 lightening to see the failure of electric trucks. Chevy, Dodge and Ford all have, and it shows. Chevy's electric Silverado has a lot more range because more people want a truck for towing than the 1% that hacker news claims, and so range became and issue. Ford and Dodge are instead looking at plug in hybrids for the future: use an engine when towing, and battery for acceleration and shorter trips.