That is of course true but you have to understand that if member state really doesn't want it to work it can do so. Law will be written, agency/department will be created which will be understaffed/inefficient and enforcing a case will take 10 years.
Considering that votes on the issue were very controversial (no clear majority) I am suspecting it will be Brexit #2 in terms of execution, everyone will fiddle about for 2 years then pass some laws as incomprehensible and non-enforceable as the directive itself and that will be the end of it.
