

I think the above user was referring to this: https://www.faa.gov/newsroom/faa-moves-protect-aircraft-owners-private-information
They are no longer making the information public which aircraft belongs to whom, so in the future you might no longer know that any given aircraft belongs to Elon Musk or any other celebrity. You can still track it, but you won’t know what aircraft to track.
Yes; I thought there had been enough news stories about this that this was common knowledge?