Let us not forget about the eventual overtaking of the PETRO-DOLLAR by the PETRO-YUAN. It is happening every minute of every day. Markets accross the world are dumping the dollar, who would blame them for doing the rational thing in the face of insanity.
If you were right, would not the US dollar then lose value against other currencies? The opposite is the case. The USD almost wins against all currencies in the world, including the Chinese Yuan and the Euro. It may be that there are many dumpers, but there must be more buyers.