I haven’t has a car with mechanical locks in a long time. I’ve also not had a battery so dead the locks didn’t work.

There’s usually some sort of mechanical release for safety for stuff like this.

On the mach E, my understanding is there’s a panel where you hook up a jump box that supplies power to those circuits to allow you to use your key fob to open the door. But there’s no bladed key to manually unlock the car. So technically there’s a failsafe but it’s not ideal. And I agree it ought not be allowed.