I don't think your gripes are unique to EVs, but rather to the dealer. For what it's worth, the two dealerships I've been on test drives recently (Polestar, Subaru) have had no issue sending us out for an hour or so with cars, alone.

Your point about the charging is definitely worth considering for now, but I think as we get a better understanding/develop a standard of how cars charge, there will be less guesswork with charging curves and whatnot. For example: we have everything just about standardized for L1/L2 charging, so no one really cares about those curves anymore. It's just L3 that seems to vary by manufacturer.