All the facts are true here, but "design defect" is silly. The entire purpose was to keep a country like the US from exploiting its position, and becoming the "world's reserve currency" which is just a euphemism for running up massive debts to poorer states.

Bretton Woods was sabotaged by the US and the USSR through the single vehicle of https://en.wikipedia.org/wiki/Harry_Dexter_White. Without a Bancor, the entire system simply became a mechanism to exploit the poor.