The beginning of the end started with Nixon. It allowed US to print whatever money and never default. I find it insane that the world went along with it. Seems like a parody.
It's what Carney's speech alluded to when he cited Havel's The Power of the Powerless [1]. The sign was put in the displays because it was the best thing to do for the vassal states. Those days are slowly ending, more and more countries are going to stop displaying the sign.
This is also what at least part of the Americans doesn't get. Europe, Canada, Japan, South Korea, etc. weren't freeloaders, they were doing the bidding of the US in the UN, maintaining the system where the US can print money without limit, etc. All that soft power has been destroyed.
This is just Germans dealing with end being unavoidable.