Why would someone spending 100k on a truck care about efficiency If it has sufficient range for road trips?

You’re conflating deductions and credits. I suggest you research the the difference and read into bonus depreciation as well.

For most applications yes. But there is still a demographic that wants vehicles that satisfy 100% of use cases, not 95%. I have two EVs and an Expedition. I can’t began to tell you how often I hear about limited towing range from people that tow short distances once or or twice per year. You would think they’re excited about the Ram w/ range extender. But then they bitch about the 3.6L generator and price, even though the price hasn’t been announced.