[meragrin_]

Only if you know about it. How many people actually know about it?

[ceejayoz]

We're talking about stalkers, right? People who have a vested interest in finding such a thing?

How many people knew about @elonjet? You have to seek that out, too.

[Karawebnetwork]

You can get the information in three search queries.

"How can I track someone's plane?

"What is Elon's plane registration number?"

"Website that tracks plane flights by registration numbers"

[asteroidbelt]

There's non-zero number of people who are not able to enter these three queries in google, and may have desire to act on that information.