Requesting the data from Google has the advantage that it can also include iPhone users who have Google apps or apps using one or more of Google's analytics products with some kind of location access.
How so? https://en.wikipedia.org/wiki/Geo-fence_warrant search for Apple there and maybe provide a link why Apple can't find people that have maps, find my shit or other features on.
https://www.apple.com/legal/privacy/law-enforcement-guidelin... https://support.apple.com/en-us/HT202303
Find My:
> Device location services information is stored on each individual device and Apple cannot retrieve this information from any specific device. Location services information for a device located through the Find My feature is customer facing and Apple does not have content of maps or alerts transmitted through the service.
Air Tags:
> The interaction is end-to-end encrypted, and Apple cannot view the location of any AirTag or supported third-party products