Therein lies a problem: there are no facts of nature. The only things that could be said to be a fact in nature is to describe how you observe something to work

Therein lies a problem: there are no facts of nature. The only things that could be said to be a fact in nature is to describe how you observe something to work. The observations may change, how it works may change, and neither of these things force nature to be a certain way. It would not be impossible for someone to change the observations of the blockchain, manipulate its inputs and outputs, or even change how it operates, as software and hardware are imperfect, along with how we use them. Furthermore, even if the system were technically perfect, political and economic systems do not have to abide by their rules. An oppressive state can simply decide not to deal with them, as the world is in no way bound to being purely rational at all times. It's like trying to "fix" a painting by using philosophy. One is a series of logical arguments, and the other is paint on canvas; certainly they can influence each other, but they can't solve each other's problems.