That would require you to now have all users opt-in to cookies on your site where they didn't have to do that before. ... because users absolutely love clickin

That would require you to now have all users opt-in to cookies on your site where they didn't have to do that before. ... because users absolutely love clicking through those annoying opt-in compliance boxes. So the admin now has the choice of no longer having that data or damaging UX. The law seems pretty clearly bent on just not letting web admins collect that bedrock baby's-first-metric anymore for European users.