Thanks for the discussion.  My imperfect understanding is, FDR seized the gold because the dollar was backed by it at the time, yet citizens were attempting to trade in their dollars for gold during the Great Depression.  The govt could not keep up and tried to outlaw private ownership of gold.  That kind of prohibition didn’t work and, eventually, the govt  recanted. 

 It looks to me like the same thing is going on. As the dollar keeps dropping, more will trade their Dollars for Bitcoin and may try and outlaw private ownership. I wouldn't stay they recanted but 40 years later, Ford repealed it