I think it's not so much "maintenance" in stuff you're expected to do, the issue is when something goes wrong, the repair infrastructure isn't great. I.e. yea, the motor doesn't go wrong as often and there are less fluids, no transmission. But say, there's an issue w/ suspension or even the specialized wheel/tires, Tesla is notoriously bad at fixing these (such as, of all ironies, Ford dealerships have a brisk growing business in fixing Teslas).

I don't know if things are better at Hyundai/Kia now that their EV business is growing but I would hope so since traditional auto repairs/dealer and parts networks should be one of their core competencies