There is nothing reversed with Flock. There is a crime scene, they see who was entering or leaving and work from there. Without plate readers it takes a team of people many hours, that’s the difference. You can’t know who had anything to do with the crime without investigating, that’s the definition of the word!
> … we're invading their privacy
Who expects privacy driving on public roads? In any sort of developed area you are driving past cameras on every single street. Every Uber has a dash cam, the Teslas are recording (sometimes?), every police car has a camera, etc.