[likeafox]

Elon flies in Gulfstream G650ER jet. As required by the FAA, it is equipped with an ADS-B transponder which broadcasts its position in the clear. Just as traveling on public roads means that you are visible and observable to the public, flying via public roads does not guarantee total privacy - the service that @elonjet was using is maintained by private volunteers, who use their personal network of SDR receivers to spot and aggregate flight data.

"Real time location" means the real time landing of an aircraft at an airport. I don't think people who fly in private aircraft should have a reasonable expectation of complete privacy if they're using public airspace and safety systems maintained by public authorities. If government officials / air force one can cope with being tracked by radio transponders transmitting in the clear, I don't know why Elon expects he can do any better.

The incident Elon purports to have taken issue was forty miles away from an airport days after his jet had last been spotted by @elonjet.