I would not tolerate a car that had any kind of connectivity with the outside world/internet. That would have to be disabled! The car needs to be airgapped, and have no data logging capacity, nor any sensors that could capture information that is not needed for the immediate operation of the vehicle.
My vehicle's ECU can sense vehicle speed, engine RPM, mass airflow rate, air temp, coolant temp, barometric pressure, EGR valve position, throttle position, exhaust gas oxygen... I think that's it. I may be forgetting one or two, but if so, they are all related to the task of operating the engine. It has no idea about anything else. Its job is only to determine the fuel injector duty cycle, spark advance, and intake air bypass to control the idle. Oh, and at WOT, it turns off the A/C compressor. Nothing more, nothing less.
To me this is the best of all worlds... electronic enough to get better gas mileage and have better driveability than a carbed car, but primitive enough that it can't be used to datamine me.