you would have to show your work if you want to make that accusation. otherwise it’s just conspiratorial thoughts and cynicism.
i can’t get much of anything like this telmetry over OBD II, and it certainly isn’t giving an internet connection to the car.
3rd party mechanics aren’t plugging into anything but OBD II, and the kinds of systems you are talking about aren’t being checked by mechanics.
this is just blind undirected cynicism. please show your work. I hate our surveillance state too, but if you misidentify the problem you will push away people who understand the situation from your cause.
this is also why vote manipulation is a thing. people are prejudiced by the appearance of a consensus.