Simple, your app receives one of four values to reflect the state of ATT: https://developer.apple.com/documentation/apptrackingtranspa...

This allows gathering aggregate data on how many users have opted in and out of ATT. What it doesn’t allow is the use of a tracking identifier that spys on your every digital move like an obsessive ghost.

This is Apple tracking which options you choose per app, not Facebook ;).

I wouldn’t be surprised to see a controlled leak from Apple, but would be surprised if they chose that publication. It reads a little like a draft.

Eg “iPhone Users Dump Block Facebook Tracking”