That is total Bullshit. When a country joins the European Union fully, it should accept that it now has to follow the rules that this Union is setting.
It's not like they have no say in that Union, you know.
If they don't accept the laws/rules that the EU is passing, they better get out of the European Union. Because the entire reason to have that Union is to be a UNION.
Not accepting certain laws that the EU is passing is like saying that if the government decides to pass a law that all cars have to drive on the left side, anyone who doesn't like that law can just ignore it and drive on the right.
The European Union and the EU Goverment are democratically elected, its not like it is a Dictatorship. If you want to pass a new law, but don't get enough votes for that law, then you just have to live with it... On the other hand, if someone else passes a law that you don't like, you also have to live with it. Democracy is democracy...