I’m afraid this quip reflects the impression some might have of Germany at the moment. But let me add two things: first, the same joke was being told in the 1990s, and back then, the French where the ones holding the light-bulb. Second, the joke did not reflect actual circumstances in the 1990s, nor does it reflect them today.
The scale and timeliness of monetary policy support were already significant. By April, most major central banks had reduced interest rates to their lowest levels in history, and some went even further by instituting unconventional credit and quantitative easing strategies. Over the same period, fiscal policies around the world were eased substantially to support demand.