A good work truck is one you don't mind getting scratched and dented. Hard to replicate that with any brand new vehicle, especially one with a $60k starting price.
That said, I think the Lightning serves certain roles really well. They're great for the forest service, for municipalities, utilities, etc. If they were actually cheaper than the ICE version I think they'd gain a lot of adoption for those kinds of fleets.
Since they're quite a bit more expensive, though, buyers have to make the case that they're worth it. Pretty tough proposition unless you're trying to sneak under an emissions budget.
It's a luxury vehicle that the wealthy purchase when they want to role play. It's trim levels are the higher end. It's bed length is the smallest.
It isn't a work truck, it's a costume accessory.