Don’t get me wrong, obviously people like yourself make these long ish trips regularly and you’d benefit either from more range or better infrastructure. If, like gas stations, there were two hundred thousand charging stations sprinkled through the country, less range in the car would be less of a concern.
I know someone from my college days that hung a 100’ cord out her third story window to plug in her little EV. Nissan Leaf or something of that class. Worked like a charm for puttering around town.
I’m sure the data isn’t perfect, but as far as the averages go, it’s accurate for my driving patterns. Those trips you’re taking nearly double your yearly mileage, so that would certainly change your average. Without them though, you wouldn’t be too far off based on what you’ve described. I’m fortunate that I live near a train line for my regular trips out of town. Not an option for the vast majority unfortunately.
Another option a couple I know took was a hybrid. Most of the time they don’t use the engine, but when they go see family or what have you, they’ve got the range they need without having to find a charger. Pretty convenient if you ask me.
Eventually we’ll have charging stations all over, or maybe light rail, and going hundreds of miles in a day without a thought to battery depletion, but I doubt I’ll be around to see it.