These predictions were made back in 2020. Now it’s already 2024, but nothing bad is happening with the currencies you specified and I’m sure that it won’t happen. In order for the currencies of these states to disappear, it is necessary that these states themselves disappear or they unite following the example of the European Union. Now almost all states and their currencies are going through difficult times. But this does not mean that they or their currencies will disappear soon.
As long as these countries still really care about their country and their own currency, of course they and their currency will never disappear. Because this really depends on the concern of state officials who are willing to make efforts to maintain their country and its own currency in the long term. And if this year everything expressed by the OP is still there based on predictions four years ago, that means it hasn't disappeared yet and there is a possibility that it will persist for a long time.