So let me get this straight: you have exactly one data point, and the second data point using is a German chancellor widely regarded as one of the worst by many measures. Right?
This is FUD. They said the same about the Greeks in 2008, it is complete BS. In any given org, passed a certain size you'll find ppl who slack a lot and people who work for three. Unfortunately that seems to the nature of large orgs, nothing special about Germans...
ps. I'm having a DejaVu. This is the exact same narrative Greek politicians used against the Greek population to justify them become poor overnight.