where did you read that?

and if they realise that and disable the car until you remove it?

Cars collect data about you to sell them to insurance companies. There was a study by the mozilla foundation about this and they said that there is basicly no modern car that does not do that.

The only thing you can do to avoid them is buy an old car.

buy an old car and convert it. It aint gonna be cheap but probably cheaper than a new EV.