80% of the US lives in urbanized areas and a good chunk of the remaining 20% live in relatively close proximity to urbanized areas. Rural areas in the east and Great Lakes are mostly not far from metros.

People like your parents are edge cases, although even their daily medical trip is just about feasible with an EV today. The number of people living in very rural West Texas or southwest are relatively small (and the mountain west is rapidly urbanizing unfortunately).

EVs don't have to meet every use case just like an ICE diesel pickup truck or a steel crusier bicycle wouldn't fit everyone's transportation needs today.

But they definitely can already meet the majority of Americans driving patterns today.