This implies collecting data for ad personalization is the only means through each Apple tracks you, which clearly isn't the case [1]. Some interesting keypoints posted here before: [2]

As it currently stands, there is no way to "opt out" of being tracked by Apple.

[1] https://www.scss.tcd.ie/doug.leith/apple_google.pdf

[2] https://hn.algolia.com/?dateRange=all&page=0&prefix=false&qu...