Well, ADS-B Exchange still has his plane listed as you can see from the second link. So while that sounds like it could have been the case at one point, it does not seem to be the case right now.

I assume they are referring to the blocklist described here: https://www.faa.gov/pilots/ladd

> ADS-B Out transmits flight data directly from the aircraft to internet vendors not participating in the LADD program. Non-participating internet vendors collect and post all ADS-B Out flight data on the internet. To address ADS-B Out privacy concerns, the FAA has initiated the Privacy ICAO Address (PIA) program to improve the privacy of eligible aircraft.

ADSBExchange does not participate in the program that the blocklist is part of. They even cover this on their homepage

https://www.adsbexchange.com/

> First and foremost ADS-B Exchange does not participate in the filtering performed by most other flight tracking websites which do not share data on military or certain private aircraft. Because ADS-B Exchange does not use any FAA data there are no FAA BARR/LADD, military, or other “filters” preventing you from seeing the the data you collected. ADS-B Exchange simply does not accept payment or requests to remove aircraft from public tracking!

LADD is only one system, that adsbexchange doesn't use, but PIA still applies to them. Once the ICAO number changes the link the person posted above will no longer point to Elon's jet. You'd have to again have someone in person at the airport to deanonymize the jet.

ADSB Exchange can't get around ICAO anonymizing just by looking at the transponder data.

I'd imagine you could deanonymize easily enough just by seeing "ID A enters airport, ID B exits the airport" in logs.

His aircraft is not in the PIA programme. Which renders his complaints somewhat hollow.