Further, location broadcasting isn't a function of any form of GPS, per se. It only exists as a function of mobile apps - not just things like Google Maps, but pretty much every other mobile app, as well.
The cell phone system can pin your location fairly accurately, in real time, as the triangulation math it performs is a prerequisite to knowing which tower to route your calls through. Pinpoint accuracy (as required, for example, by E911 systems) is provided via the interpolated GPS location being sent over the wire. If you have (for example) Location Services disabled on your iPhone, calling 911 isn't going to give the call taker your precise location.
Which I do in most cases--at least in my daily drives. If I'm coherent enough to make a call, I'm coherent enough to relay my position. If not, well then, what's the difference?
I do not enable locations on any apps, ever, for any reason, other than Google Maps. Instagram can suck my nuts with its "help us deliver you a better user experience" nonsense.
I one got a ticket on my parked car for an expired registration at the Sam's Club in Freehold. A LPR was the tool used. I can live with that. My papers were out of date, my bad. That, however, is nowhere near the same thing as Freehold PD archiving my daily trips to Sam's Club, cataloging those trips and running my shopping patterns into a predictive algorithm to determine what time of day I'm going to buy 3 pound bags of Doritos.
People who shrug their shoulders at these total assaults on personal freedom and liberty disgust me.