The grid in rural areas suck, in general. The reliability is terrible and there may not be enough capacity for everyone to start charging their vehicles when they get home from work. Rural people also tend to drive many more miles (and sometimes much more energy intensive miles), and range can be a serious challenge. If they’re hauling, range is significantly diminished, and it’s not like you can throw a few extra batteries in the bed for when you’re out of juice. With a diesel, you can throw a 100gallon transfer tank in the bed for under $1000 and make it clear across the lower 48 without stopping (though that’s not normally what they’re for).
All that said, electric has promise. Longer vehicle lifetime and less maintenance is a huge plus.