The writer and thinker Balanji has been very active on Twitter talking about the risk of US dollar abandonmnet.

Now that foreign markets are ripping there's less people posting the GDP/cap charts of US vs EU. It's not lack of patriotism, only cope for the market losses. A lot of the American exceptionalism was just a strong dollar. I've been mentioning this for a few months. If strong US markets make a comeback, people will continue to mock the Europoors and think the Chinese are just backwater communists.

However, a weak US and weak dollar is not good for foreigns either. A weakening US also means weakening demand for all. A weak-status dollar is a write-off on global dollar assets, a sort of debt crisis. Debt crises are never good for demand, or companies, or markets.