>Hardly anyone needs 600 miles and no one seems concerned that it takes an hour to add 300 km because most people charge overnight.

I could do with a 200km range for my daily commute, but I also have a camping trailer that I'd like to use at least once every year for a 1000km+ trip. This is just not feasible with the current generation of EVs. I could imagine loading up the camping trailer with batteries to give me that 1000+ km range, though that will increase the weight and recharging at the destination is usually impossible.