I think that they should've included something into the law, that makes it possible for a browser to automatically signify how a user wants their data to be used; for browsers to offer some interface to control these choices, and force websites to automatically accept these choices. I'm hopeful something like that will come around sometime. I think some browser (looking at firefox or brave here) needs to perhaps offer such an interface first, so that legislators could pick it up and make a law that'll make it possible to enforce compliance.