It shows up in the stats, citizens almost always trust EU more than their governments and want EU to have more power but all this means those local governments becoming less important and therefore no one is really pushing for it.
Fingers crossed Trump invades Greenland so things can start moving.
The lesson is the opposite: The EU needs LESS power, not more. If the member states didn't have a cartel to tyrannize their collective population, this regulation could never have happened. Any single country that would try to enforce this would be on its own.
Unlike what you appear to believe Europeans are not some libertarian captured by the EU socialist, most europeans do want less wasteful and less harmful packaging.
Actually they'd have no retroactive way to enforce it at all, and the most they'd be able to do would be to charge an import duty on a per-parcel basis, which would ultimately be borne by the importer.
This would be a huge improvement over the utter nonsense they're implementing!
EU will be in mess forever because it is problem of power and greed.