It IS broadcasted. You know why? TO PREVENT PLANES CRASHING MIDAIR! Is this really something we need to point out?
Also: Planes have no right to privacy - i know in the US you like to make corportations into people, but planes are not (til now at least).
If you have problem understanding the difference: A plane is tracked - it may include Elon or not, just like any other plane. Sure, next we ban announcement of departures and landing because elon musk COULD be on the plane? You're delusional.