I believe it possible that the problem of fiat money deepened after the collapse of the USSR. USA as the only remained super power, afford to do what it wants through political, economic and military pressure. Group countries reached an enviable prosperity at the expense of the whole world. But every beginning has an end. In our case, that end involves the reduction of the existing financial order, resting on the hegemony of the dollar, in a new and fair order in which the place of the dollar will be similar to other national currencies.
Even when the USSR was present, the dollar was the reserve currency of the world. If anything, problems with fiat have increased post the financial crisis and adventurous quantitative easing by central banks across the world.