Elon is trying to say what I’m posting isn’t public information.
ADS-B and ACARS are all over public frequency and are acquired by organizations like ADSBExchange.
This is like saying AM or FM signals aren’t public and that reciciving a frequency is private.
Aviation enthusiasts have been reciciving this information over the air for atleast a decade now. Even companies like FlightAware and FlightRadar24 rely on hobbyists to receive this data.