He promotes the notion that: 1) Germany creates wealth better than other countries, and 2) by saving and investing that wealth rather than consuming it, Germany does a disservice to the world and impoverishes its neighbors. [1]
By the same logic, we should applaud billionaires for building mansions and enormous yachts rather than living modest lives and investing in startups and other businesses. And what of all the arguments about the US and other first world countries consuming such a disproportionate share of the world's resources? If we were to consume less, and by necessity save and invest instead, we'd be impoverishing the rest of the world!
Germany is perhaps culpable here -- culpable for making bad investments which enabled wealth destruction. And they're further culpable for bailing out Greece, which perpetuates the problem and supports our world's already out of control situation with respect to moral hazard.
[1] I'm ignoring his point about currencies here, because I don't really disagree with the notion that Germany engaged in a counter-productive vendor-financing scheme on consumer goods. That's the same boat that China's in with the US. What I'm trying to emphasize is that the problem is who they loaned money to and for what purpose, whereas the author seems to imply that any increased German consumption would have been better than increased savings.
[2] The author also seems to think it is misguided to blame the spendthrift politicians in Greece. Whatever you think of the economy of Germany, I can't see what's mistaken about blaming spendthrift politicians.