Everyone knows your location: tracking myself down through in-app ads

I wonder: to which extent are purchased/brokered app real-time location data feeds used by various intelligence services to target missile strikes in war zones? In e.g. Ukraine/Russia.

The leaked tools that NSA used, like XKEYSCORE, used publicly available data collection methods, including purchasing advertiser lists, to cross correlate all the data and form a profile. So anybody could do this stuff.