I think once you get a little bit of feel for how the projected miles translates to the real conditions under which you intend to drive, I‘d just as soon work with the mileage display. What did I do with half a tank of gas? That was 5 gallons in my last car, and the car got about 40-50 miles per gallon. So a half tank would drive me around for another 200-250 miles, which wasn’t really relevant either most of the time because of omni-present gas stations. Except when I cut it too close and got out in between urban areas and had to sweat over whether or not a gas station would appear before the tank went completely empty.
But any time it made a difference, I was converting gas quantities to miles. Now, Tesla does that for me, except they generally aren’t super precise. But once you get a feel for what factors cause inaccuracy, you can then translate Tesla’s miles into something that that is more accurate for your particular situation. Not really that much different than translating half a tank of gas into miles. But ICE or EV, I prefer to think in terms of miles.