The point is that Germany cannot stop it. Convince, by hook or crook, the 14 people of the ECB board to do something, and there are no legal pathways available for Germany, or anyone else, to stop it from happening. So convince them to do quantitative easing by mailing out 300 million checks or monetarising every european national debt across the board until unemployment hits zero, and all they can do is have seizures. They are ideologically committed to a framework that includes the central bank having near-total freedom of action. This can, and should be, turned against them.