Ok, lets rephrase it a different way: Why are websites required to inform a user about data tracking and required to ask for consent in a custom implemented, n

Ok, lets rephrase it a different way: Why are websites required to inform a user about data tracking and required to ask for consent in a custom implemented, not-machine-readable dialog/poup. The user can not even check if the tracking is actually disabled once they clicked "decline" or "only accept technical required cookies". Why not require websites to provide that information on a per-file/per-cookie/per-localstorage-key level. Then browser could block all js-files/cookies/storage-entries that have now proper description included (eg, in an http-header for files, or a robots.txt-like cooies.txt file, or as standardized comment at the top of a js file). Currently there are extension like no-script taht block everything, but how about allowing/requirig site-owners to annotate files with tracking meta data in order to be unblocked?