"Data sharing" is pretty vague but assuming you are talking about car data, it's completely decoupled from the VIN or any other identifiers that could ID you, so disabling it is just silly, but yes you can choose to not opt in.
Does "car data" include locations? There's not many people that start from area A (~500m^2 around your home) and go to area Z (~500m^2 around your office) every weekday morning, and back again every weekday evening.
And yep, this applies to anything that offers vague rudimentary location monitoring.
Correct, many folks don’t realize how much can be derived about them from even anonymous data.
Personally not interested in all this auto pilot stuff anyway. Deceleration when approaching an object and rudimentary lane assist are all I’d care for and shouldn’t require machine learning.
It does include location if you stop at a supercharger. They need to know where you were in order to charge you properly. I don't think that's one you could opt-out.