Hanlon's razor: Apple is just lazy and defaults all these things to on, rather than keeping tract of the settings since they are used or needed by 99% of people. Apple loves its Bluetooth keyboards and mice, after all.
To wit: iOS requires precise location be enabled just to show weather on the home screen; I can't set a static location and just get the weather report for that place.
The whole thing just reeks of willful surveillance anti-patterns.