That's a user-hostile feature, not a property of electric engines. An electric car has far simpler mechanical parts, and the circuitry isn't very complicated either. It could be made incredibly easy to repair, modify, and upgrade, mostly at home even, if they designed them that way

That's true. But since now it's all messed up shit that you can't fix yourself they're on fairly equal line there.

This isn't a function of the engine though right? Electric engines are inherently simpler and should therefore be easier to maintain (putting aside company fuckery)