Do you have data to back that up? 100 miles is pretty significant for a work truck, especially if youre assuming you wont be able to charge it at the turnaround point and get ~200 miles

Is that simply your impression, or is there trip length data to support that?

its pretty simple:

an electric truck can tow big stuff no problem, but not very far.

so whether it is good for towing depends on how far you tow.

Most of the land in the US - sure. Most of the people in the US - no.