“Neutral” on an EV doesn’t mean the same thing as on a IC car. The motors are still physically connected to the wheel, so turning the wheels will create an electric current.

That current will flow into the batteries from the “wrong end”. Normally, charge controllers and battery management systems will ensure every cell of battery gets a balanced charge, but those systems don’t work when you tow or push an EV. You can end up ruining the battery. Another issue is that power and friction cause heat, and when the car isn’t running, that might cause overheating.

Now, the good news is that you’re very unlikely to push an electric car fast enough or far enough for either of those to become a real issue. Electric cars are still big and heavy.