The only thing that you need to do in order to know the answer to that question is to think a little bit about it, governments and banks have a monopoly when it comes to printing currency so they can do whatever they want with it and people have to accept it, and as you know monopolies are very damaging for the general public because it means they do not have a choice when it comes to selecting a product or a service.

So what those institutions fear the most is competition, and for the first time in a very long time it has appeared a competitor that they cannot control and that is why they are thinking about all kind of excuses so they do not have to accept it.