So you wouldn't mind your car being tracked and publicly broadcast?
It is just an automobile after all, and vehicles aren't citizens...
Cue fallback argument.
EDIT: added clarification to distinguish between Tweeting coordinates and Onstar services.
I mean it is tracked quietly by those who care.
jacquesm didn't decided to be public figure who owns a jet, and no one asked Elon to do the same. Elon is free to walk away from it the moment he chooses to be.