That one could have used a more descriptive submission title. (I would prefer an HN policy, FWIW, of favoring submission titles being informative over them being faithful to the original article's title.)
For example I can't restrict it to one app without enabling Apple to collect location data.
There is a difference between "Apple" and "your device". If there is evidence that Apple is collecting/using location data for some purpose not detailed in their privacy policy and granular settings, then yes, that would be a problem. But that isn't what the info currently available says. It says that the system (device itself) is periodically accessing location data IF location services (globally) are turned on. Seems to me that should be expected...