I mean the worst of this is the Range Rover I hired for a wedding to drive the bride in. Headlights gave out due to an electrical problem with CANbus when I was driving it back to the hire return. Just give me some fuses, switches and relays thanks.
My iPhone has 100x better navigation, media and communications support than anything else I’ve used. So I just slave it to the car with BT. I don’t even use CarPlay because bugs (Ford, Land Rover, Citroen in particular).
Keep the software and hardware separate and keep the hardware simple.
I also bet on simplicity, both because it's much cheaper, and because it gives me less trouble. Fuses, switches and relays, as you say.
I simply don't trust a company who already has my money to maintain a software package on wheels, and I just don't trust software in general.
For the price of a Tesla you should be getting so much more inside especially at the S/X price level. Compared to the Mercs and BMWs I looked at a Tesla was more comparable to a nice Honda.
Look at what BMW offers for an EV. The i3, at $44k base. The i3 is basically a midlevel compact sedan. The Model 3, which you can get for $4k cheaper, is a way better deal IMHO.