Apple has its own trackers and ad services. But it treats itself specially. While other apps need to ask. Maybe I don't want some apps from apple to have the same permissions, as other apps from apple. It is basically bundling. I agreed for one app from apple to share data, not for all apps from apple. Oh, and don't let me start about wording they use on these pop-ups... Like when I download some app from the internet, which is signed, notarized and so on, it still asks: oh, you downloaded this app from the internet (surprise!)... Instead of: "ok, you downloaded from internet, it has sign, notarification, developer is already delivering software for 10 years and have 20 million users, so looks safe to run...". Basically, fear inducing messages instead of actually useful from security sense.