Couple things there:
1. Gdpr is eu market more or less.
2. There is no law dictating how consent should look like (to the font color/size level).
3. Apples data is first party, massive difference.
Up the thread someone claims Apple calls it "personalization" when they ask you to opt in to it from them but "tracking" when an app asks you to opt in to the same thing.
Imagine if you are less monetizable user, in theory, app should be able to restrict what you can do in the app. It's a business transaction after all
But apple gets a say in this too.
Also apple uses it's app store moat to restrict tracking on websites too, similarly.