It's disingenuous to suggest that the EU bears no responsibility for the situation in Greece. The EU wanted to make it as easy as possible for countries to join the Euro, and even though they established rules designed to ensure that a country's economy was sufficiently robust, they made little attempt to validate the submission made by countries proposing to join. Did anybody seriously believe that the Greek economy met the criteria? Indeed, it would come as no surprise if it transpired that the EU provided assistance to Greece to ensure its submission passed the tests.
I agree that the specific example of Greece wouldn't be applicable to the UK, but the principle of putting central control ahead of local democracy remains relevant.
I agree with you regarding the economic mismanagement in Greece, and the binge the country went on when it suddenly had a combination of a strong currency (compared to the Drachma) and benign economic conditions. I'm not saying that they don't deserve to suffer as a result of that imprudence. Nevertheless the people of Greece voted for a government committed to take one path, and the EU imposed an entirely different one. My point is about democracy, not economics.