Are we saying that electric cars don't need, say, oil, brake fluid, hermetically-sealed systems, moving parts, etc.
Most of what I've ever taken a car to be serviced for consists of:
- Consumables (brake pads, oil filters, air filters, tyres, aircon, etc. - almost all applicable to electric cars)
- Failures of the car itself (e.g. suspension, exhaust, starter motor, radiator - mostly applicable, or analogous to, parts in electric cars)
When a head gasket goes, or the gearbox fails, you throw the car away if the price is above what you consider acceptable for a non-MOT repair if you're a normal person, or get it serviced under warranty if it's vaguely new or the work still affordable. Few people rip out their engines, change pistons or anything like that in anything approaching a modern car, even people like my father who worked on nothing but car / lorry engines for 40+ years.
On an electric car, no matter how fancy, there are still the same forces involved, still the same failures involved, still the same structures and parts and functions involves, they just might be on a different system. No different to a Wankel vs a 4-stroke, "electric" is just another type of engine. I can replace a dead battery myself, for instance, but I wouldn't be touching a Tesla's battery. The service work has just shifted to proprietary systems under electronic control, serviceable only by Tesla, that's all.