Not with modern cellular and Wi-Fi tech we can't. Base stations literally “steer the beam” to follow you. Precise location spying is essential to the way they achieve such high throughput.
we can't have privacy for mail contents. the post network literally "routes the package" via the address on the box. digging through your mail is essential to the way they achieve such delivery rates
You're missing the point. Just because it's possible for that tracking to happen, it doesn't mean it has to happen. We could have strong privacy laws. Mobile carriers (and anyone else) could be required to not store this data at all, or at the very least delete it after a short time. We could have mandated surprise audits to ensure this actually happens. We could have significant, company-ending fines for non-compliance.
We don't, and that sucks. But it's not a binary choice between "you can carry your phone everywhere" or "you can avoid having your movements stored in a database indefinitely". There are other options that we as a society could choose, if we could get our acts together.
Sure, the opsec ideal is that you don't have to trust other parties in the first place. But honestly, for the vast majority of people, that sort of thing doesn't matter, and having strong, readily-enforced privacy laws would be more than sufficient to keep people safe and secure.
This confuses a technology used for the purpose of optimizing the performance of a technology with tracking for the purposes of selling you crap or keeping tabs on your location for unwarranted reasons. Huge difference. The former does not entail the latter.
Of course we can, these are all non physical properties of the universe. We can design things to not enable tracking or advertising, we just don't because the public isn't allowed to provide public solutions so we're forced to use malware by corporations that profit off of the malware.
Do people seriously forget that humans design with an explicit purpose? That purpose can change you know...
edit: needs to be stated that the last data privacy law the US passed was regarding video rentals in the 80s.