This is what an aircraft in the PIA programme looks like. https://globe.adsbexchange.com/?icao=a0fe01
Note the 'PIA' flag and lack of additional information that would normally be pulled from the registry. In fact if you searched the registry for A0FE01 you would not find the actual aircraft but a placeholder.
Musk uses three jets, N628TS, N272BG, and N502SX. None are in the PIA programme, all are easily visible on ADSB Exchange and most importantly have their ICAO hex codes listed publicly on the FAA registry, along with ownership information.
So please, let's stop repeating this false claim.
N628TS:
https://globe.adsbexchange.com/?icao=a835af
https://registry.faa.gov/aircraftinquiry/Search/NNumberResul...
N272BG:
https://globe.adsbexchange.com/?icao=a2ae0a
https://registry.faa.gov/aircraftinquiry/Search/NNumberResul...
N502SX:
https://globe.adsbexchange.com/?icao=a64304
https://registry.faa.gov/aircraftinquiry/Search/NNumberResul...