There's a ton of difference between a random person noting my presence at a single point in space-time and a commercial entity tracking and storing my movements all the time.
Being okay with people watching me in public does not imply being okay with someone aggregating the information about my whereabouts 24/7 even though it's "the same" information.
Btw it's a fallacy similar to the one debunked in "what colour are your bits". The context matters, not just the abstract information.
Exactly. Constantly monitoring and aggregating your movements everywhere is basically stalking.
This is an unfortunate thing about a whole lot of legal precedent in the US.
Courts made a pretty reasonable set of tradeoffs around the 4th amendment for search warrant vs. subpoena, police officers observing you, etc.
During the 19th century.
Unfortunately, modern data processing completely undermines a lot of the rationale about how reasonable and intrusive various things are. Before, cops couldn't follow and surveil everyone; blanket subpoenas to get millions of peoples' information weren't possible because the information wasn't concentrated in one entity's hands and compliance would have been impossible; etc.