Most of today's people approaching or just entering retirement have been pioneers within technology. So many will be able to quickly adapt and change from MPG to KW/H in a new screen based EV quite easily
The generation behind have grown up with and worked with matured technology in an ever changing market place. It will all be almost second nature to them
The generation before them, as a kid they can pick up a tablet, swipe & click,.... as an adult they will collect their new car, swipe & click.... charge their new car, swipe & click.
It's not inability to use technology that's the problem though.
It's "if I were in a petrol car, none of this would be necessary".
My wife's trip to York and back, it's true she could have done on a single tank of petrol. And if she'd set off without enough in the tank, she could have pulled off pretty much anywhere, filled up and been on her way. Some drivers try to avoid filling up at motorway services, because of price, but that's all.
Now, she could have had a smooth journey if she'd studied ABRP ahead of the journey and let it take her to an ultra-rapid close to her route. And she will next time. She ended up taking a 2 mile detour to find an ultra-rapid. 2 miles isn't much, but neither is it nothing.
We knew when we chose the car that longer journeys would be slightly more hassle, and we accepted that because journeys like that are infrequent for us. The rest of the time we get free charging (for the timebeing) at work, and cheap no-hassle charging at home. But we mustn't pretend it isn't additional hassle which would affect people who make frequent long journeys on varying routes.
(I say "varying routes", because if you just ply the same route, you're going to find a charger that works for you, and use it every time)
We keep saying "it's fine, you just need to learn to do a little bit of planning", but actually when (very soon I hope) there's chargers in all the places they should be, planning won't be necessary any more.