Aero is driving a lot of EV design choices yes but it’s not as much of a limitation as you are implying - see the Ioniq 5, Cybertruck, F150 lightning or any of Rivian’s vehicles for examples where they’ve traded a bit of range for a boxier, less aero shape (admittedly often with _some_ rounded corners still).
It’s a trade off most manufacturers are not making because the US market is _so_ range conscious but I think it is fairly small margins we’re talking.