It is not about all that fancy internet-connected GPS attached entertainment systems and ECUs - they are easily hacked and removed.
It is about much more evil thing.
I already wrote about energy yoke on your neck.
I know, you already get it.
With ICE(Internal Combustion Engine) car, you could easily stock fuel for a bad day, you could grow plants and use their oil in your diesel, you could build wood gas generator and run on wood, you could even run your gasoline engine on methane from cow shit. Really, nobody could stop you from rinding your ICE car when you need it.
That is not the case with electric cars. You charge them from centralized electricity network, that could be turned off in a second, if they want to stop any travels.
And charging electric car using home devices like gasoline generators or some solar panels or whatever is not like filling a tank from barrel, and even not like starting a fire in wood gas generator. In the best situation (gasoline/diesel generator) It will take a day to get only few hundred miles and you still need fuel to do it. And it is much more fuel per mile.
So, buying electric car you completely tie yourself to the good will of giant electric corporation / authorities.
And in emergnecy, say, when you will need to ride away, they just turn off electricity few days before. You have a car, but you can't fuel it, at least in reasonable time.
So, electric cars is not about all that ecology crap, and is not about some innovation things, they are just another way to take out some independency from people.
I know, sounds like I'm a Luddite, but that is not true. Really, electric cars is older that ICE ones, And still, just like at the beginning, they are just fancy overpriced and overengineered toys that could not withstand a real-life competition with ICE cars.
Everything "smart" is running a program. You could replace that program with your own or fake environment for that program. It is not a real problem.
The problem is that you need ~80kWh to charge your average electric car. Simplifying, it could be a 80kW pushed to a car in a hour, or, 1kW pushed to a car in a 80 hours. For average household you hardly could obtain more than 5kW from a socket, so it will be minimum 16 hours to charge your car. In reality there is losses, so it will be longer.