I guess where the article falls flat is where the author says a "proper GDPR content banner" was implemented. No online publication will do this. At least they will trick you with button colors, or some kind of double negative mind trick. Sometimes they will require you to tick all the checkboxes out.
GDPR was a good idea from the start but it's implementation is rather dull - they shifted responsibility to each country without penalization for relaxed enforcing, and now there are countries like mine (Portugal) where we have less than a hundred fines.