Not true. The dollar went through a huge drop in value when the Bretton Woods system collapsed in the early 1970's, and since then it has been all over the place, yet it's remained a reserve and de facto currency all over the world.
But the last couple of years has shown a major shift with the last several months showing a MAJOR drop in value.
The dollar is at a level it was last at in 1995.
You mean when 1 US$ would buy 1.45 Canadian dollars? Today, $1 will only buy .99 $ Canadian.