I think we're way past that point already. Everyone with a phone already has their location tracked at least by their phone company. You might've even given it away to other companies willingly: https://www.google.com/maps/timeline.

I don't think there were that many unintended consequences from this tech. We got better traffic jam maps. And maybe a handful of criminals who forgot to leave their phone at home got caught.

I think this is one of those things that people growing up with the tech won't think anything of it (mom wants to always know your location) but old geezers will reminisce of a time where we still had to call a landline and talk a friend's parents first to see if they are home.