> Some brands take software very seriously. This isn't an "entire industry" problem.

This does not change the fact that Tesla is shamelessly spying on you. In fact, Tesla takes the software so seriously that it can probably fully remotely control your car. This is not something that I would want, and, if I were to be gifted a Tesla, the first thing that I would do is unplugging the cellular modem. If the car becomes unusable because of this, I would get rid of it.

All you need to do is convince your Tesla that it's in a constant state of having just crashed, and the poof, nobody will ever see your data!