Why is this even a service that needs to be offloaded to a third party? Implementing this properly obviously requires a ton of work, and no site is going to be able to dodge it by simply putting a banner service in front.
Using these automated services that pretend to "automatically" block various categories of cookies is also a ripoof. They use simple keyword searches and similar to try to establish whether a specific script is used for statistics, preferences, etc.
A properly implemented banner (i.e. hand-crafted for the site, and obviously updated each time any script is updated) would be pretty expensive to create and maintain. But if one doesn't see that as one of the key purposes of the law (i.e. push web sites towards using fewer of them because the technological and legal overhead is costlier than whatever the gain is) then I think it's being read a bit naively.
Using these automated services that pretend to "automatically" block various categories of cookies is also a ripoof. They use simple keyword searches and similar to try to establish whether a specific script is used for statistics, preferences, etc.
A properly implemented banner (i.e. hand-crafted for the site, and obviously updated each time any script is updated) would be pretty expensive to create and maintain. But if one doesn't see that as one of the key purposes of the law (i.e. push web sites towards using fewer of them because the technological and legal overhead is costlier than whatever the gain is) then I think it's being read a bit naively.