If it doesn't go viral, not at all. If it goes viral but FAZ & co issue counter-propaganda before it goes viral too much, not much. If the Rajoy government continues, it will be easy to find rhetoric to dismiss it. And if SPD and Greens (as a whole, not a few party lefties) don't dare to take it up, even a dent in public opinion won't result in much. (Just yesterday, the Lower Saxony SPD and Greens announced their coalition agreement, and the debt brake was the first priority they mentioned... without telling how they would strive to achieve compliance.)

_{*Lunatic*, n.
One whose delusions are out of fashion.}