EVs require quite a lot of electronics just to function, are hard to fix, and also finding extra electricity in places where those kind of vehicles are used wouldn't be as easy a getting a jerrycan.
Why do EV's need lots of electronics? the only required controls I can think of are:
- Charge control,
- Power control - accelerator and regen breaking
- Whatever driver assist is legally required
You don't need phone home telemetry, glass dashboard controls, dodgy auto pilot or many other luxury "needs"
I would think that an EV could be even simpler than a ICE vehicle as there is no need for all the complex engine management required to keep fuel consumption down.