A third party being able to list ads on apples ad platform that target some collection of desired user data is not the same thing as said third party obtaining

A third party being able to list ads on apples ad platform that target some collection of desired user data is not the same thing as said third party obtaining user data. Third parties are buying ad listings, not user data. They have no way to extract user data from the ad platform, unless there's some kind of data leak. If you think Apple is harvesting data off of bought back phones to improve their ad targeting that would also be a scandal (that I would expect some evidence of - otherwise it's just baseless speculation), but referring to it as "selling user data" is just obscuring what you're actually trying to communicate.