Nonsense, a complete engine in an internal-combustion vehicle - which is vastly more complicated than a battery in an electric vehicle, and which often requires

Nonsense, a complete engine in an internal-combustion vehicle - which is vastly more complicated than a battery in an electric vehicle, and which often requires removing various structural members in the front of the vehicle - can be swapped in under two days. A battery should be a few electrical and coolant connectors and maybe a dozen bolts, rolling out from under the vehicle with little else to fuss with. Engineering it such that you have to replace and bleed the brake lines or remove suspension components is basically the same as designing for non-replacement, as if you were gluing in a battery.