So if someone goes around taking a picture of your vehicle everywhere you go you won't have any objections to that because you have no reasonable expectation of privacy and it's all publicly available information. Got it. I'm sure you'll stoically accept such behavior rather than scream for it to stop.

This is exactly what highway toll systems and ALPR enforcement already do.

But even on the public side: yes, this would be entirely appropriate. It's not clear what the alternative would even be; what would it look like to have civilian evidence in e.g. traffic accidents if people weren't allowed to take pictures of others' cars?

1. Highway toll systems aren't random people on Twitter.

2. In such a case you have a need to know that supersedes one's right of privacy. Are you saying you have a need to know where Elon Musk is at all times?

Elon Musk is the antithesis of a "random person on Twitter." He's the CEO, and one of the richest men on Earth to boot.

I don't have any particular need (or interest) in knowing where Elon Musk is. I also don't know where he is at all times with the information in this flight tracker: I only know the parts that are already necessarily public.

Law is fundamentally casuistical in nature: there are standards that apply to John Q. Publics (like you and me), and there are other standards that apply to the Barbara Streisands (and Elon Musks) of the world.

Ok, so then can someone do this to you personally?

Because you posted a bunch of info public on your account.

Seems like someone could easily track down a bunch of info on literally you personally.