> you probably aren't famous so maybe you don't understand, but that sounds potentially harmful for someone who is.
I’m not so convinced. What harm does this account cause?
The most harmful thing that comes to mind is that someone could use the information to plan a murder. The account doesn’t provide this information; it is actually relevant that the information is otherwise available. A person so dedicated to hating this person that they decide to show up with violent intent at a public airport where his jet just landed or is about to take off is pretty damn likely to also be dedicated enough to find this information from other public sources. The account only makes it easier -- it doesn’t enable given that they’re already able -- for someone else to be actually harmful.
This talk of some billionaire gets to fly around in his private jet and the worst thing about it is that everyone else in the world gets to know when and where the jet arrives and departs... it’s just not something I have any sympathy for.