Agreed, it's a major difference. But that still doesn't preclude Apple from still being able to target ads based on this data. Instead of Google/Facebook who "

Agreed, it's a major difference. But that still doesn't preclude Apple from still being able to target ads based on this data. Instead of Google/Facebook who "push" ads to you based on targeting, the App Store could be "pulling" ads based on on-device data that it doesn't share with Apple.