@aparrish my thought about it: This setup is ideally-designed to let Apple respect the letter of the law in places like the EU (where they sometimes attempt to constrain ad-based surveillance) while ignoring the spirit

lawmakers are forced to choose some arbitrarily-bright line between 'personally-identifying' info (PII) and non, for the sake of it being enforceable... which means as a tech company you just need some argument for how e.g.: your DCT results identify ppl without being 'personal'