

From what I’ve been reading on this lately (since this started) on iOS a method exists for a service to send out a list of locations, or references list that exists on device (this can work with date/time triggers as well) that would trigger a notification and the local device itself handles notification of the user so the developer has no idea who has been notified for all they know they just shouted locations out into the void and the on-device location services handles the rest.
https://developer.apple.com/documentation/usernotifications/unlocationnotificationtrigger
Clearly you’ve never been on a farm, THESE are cow eggs.