Based on https://globe.adsbexchange.com/?icao=a835af&lat=34.178&lon=-119.169&zoom=9.5&showTrace=2022-12-13&timestamp=1670902710, Elon's jet has a PIA hex code (which obfuscates its identity) but was using its tail number (which reveals its identity) for a call sign? Am I misreading this?
ADS-B Exchange - track aircraft live

ADS-B Exchange - track aircraft live - aircraft flight history

In that case the argument that non-public data was required to track its flight (in this case, at least) is just patently untrue?
Is this all just ludicrously stupid?
@mjg59 Evergreen toot. Yes. The answer is yes.