For example, it has steel panels but... an aluminium frame. That's an odd choice. If you're towing something heavy then up and down motion makes the frame prone to snapping.
Big trucks (eg F150, F250, F350) exist because of a quirk in regulation where so-called "work vehicles" were exempted from emissions standards. This part is a real shame because the US doesn't have vehicles lik the Toyota Hilux, which actually have an equivalent tray size and would be much more economical to run.
An electric truck may allow a smaller truck because it's not affected by emissions (obviously). Perhaps battery weight makes this impractical. It would be nice. I mean some people import Japanese K trucks now.
Competition-wise the Ford F150 Lightning looks like a much better proposition. It looks like a truck. It's built on a proven frame. Still, sales seem to be weak. For work vehicles in particular (and, yes, a lot of trucks aren't work vehicles; they're essentially ornamental) could be quite limited by EV charging issues vs the convenience of filling up a tank of gas.