This is also why FAA now offers private ICAO numbers for ADS-B use.
https://www.faa.gov/air_traffic/technology/equipadsb/privacy
https://www.faa.gov/air_traffic/technology/equipadsb/privacy
Guess we better pray they don’t alter the deal further. It doesn’t work like this for any other registered government service, from radio licenses to securities brokers; why should it for planes? …and wouldn’t this just be subject to FOIA requests anyway, so that all it does is provide a delay? But again, why should they get special treatment?