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.

@JxckS receiving a frequency (other than designated public stations) is private in some countries, such as the UK.

This doesn't make Elon any less of an arsehole, though. Keep doing the good work!