You can also opt out of Ford too. They default enable sharing with third party for features, default disable for sharing with data brokers like LexisNexis. It requires you to put in your driver pin to enable that

The only opting out I would trust would be to take a screwdriver to the cellular modem and disable it. Of course this would probably bubble up various exceptions so best way to do it may be to isolate the antenna, though that may not be 100% reliable.

Uh… Can you also opt out of first party data sharing? Or is Subaru still going to be spying you while pinky swearing to at least not share it with anybody else?