And if you need to do a second trip that year? Or a third? Or 10 extra trips? The marginal utility of a cheaper EV starts looking really expensive. This is how people think. Owning a car that can cope with the outliers is a hedge against a period where you have to make lots of unexpected long trips.
People enjoy the freedom of ICE cars and their ability to go on essentially unplanned long journeys. Giving that up to use a cheaper EV will be a very hard sell.
Maybe I'm unusual but I rarely have any plans further than a couple of months ahead. Whether I'll be going on any long trips in the next 12 months isn't something I have any idea about yet. It depends on loads of factors (money, weather, work, whether I can pick up a bargain, etc.)
A month or two in advance is just fine, most people can do as much. They do know how many days of vacation they get though, and it's unlikely to change, so any plan you have you keep.
I could go camping with it, I could use it to haul stuff. It can fit seven adults and two dogs at the same time.
But for daily driving it'd be a huge pain. I don't need a car that big 90% of the time, a smaller, nimbler car is much more practical.
No, I don't. I'll rent a u-haul every now and then, and own the 95th+ percentile transportation machine.
I did this calculation when I switched from ICE to a cheap EV. With just the money I save a gas+maintenance yearly our family can _fly_ to our yearly vacation spot (~1200km away) and rent the biggest fanciest Mercedes for the week. And we'll still have money left over.
Or we could load our EV on a night train, wake up at the destination and drive around all week.
Or we could rent an ICE car for the week.
There was zero point in spending ~20k€ more for the car just to match that once a year event.