You're being exposed to a very specific group of people when you read Hacker News or Reddit. Plenty of people are happy to have Flock cameras in their neighborhood on account of the improved ability to investigate crime.
Of course their is no reasonable expectation of privacy here. It's not his car lol. The LEARN db query was auxillary to the precedent here.
I can't see the jump your making at all or how this precedent holds any would hold water in the case of a innocent party. Its probably just a matter of time until the perfect case is presented and new case law established. Precedents change you know?
People generally don't have a reasonable expectation of privacy in public. That's why you can record and photograph people in public whether or not they agree to be recorded. It's the same logic that makes red light cameras and parking license plate scanners legal.
The expectation has been completely eroded by flock safety.