Agreed. I don't understand the hostility to wanting to know how many miles to empty. I also think about charging in miles per hour. Don't see anything wrong with that at all. I don't care about watts. I care about putting 50 miles (or whatever) more in to the car. I don't want to travel a certain number of watts. I want to travel a certain number of miles.I very routinely get 250 wH/mi. I'm not heavy on the accelerator and virtually never drive over 60 MPH, though.
No one ever complains that they don't get the same gas milage as the sticker at the dealer showed...
The reality is, that EVs are not as easy to refuel as ICE vehicles are. Charging stations are less common than gas stations and it takes longer, so you notice your battery charge in an EV much more than you do in an ICE vehicle. I charge at home, but participate in a discount program so I can only charge at night, further limiting my charging options.
IME, the variation in 'fuel economy' with EVs is much greater than with ICE vehicles, too. I often get 250 wH/mi in nice weather but during cold winter days I would easily hit 500, meaning my range drops from 300 miles down to 150.
And yes, there are gas stations on every corner so even if you're low, you're cool. Not so with an EV. If I go below 10%, I couldn't get to a supercharger from my house. I can get the nearest gas station with less than 1/10 of 1 percent of gas available to the outback. But the second nearest gas station jumps to about 2/3 of 1 percent. But yes, if I'm out west in the middle of nowhere, I'll start worrying about refueling that car too.
And Tesla could do a better job of this. They could figure out and predict better than they do.