varufakis should reade graeber's Debt. the most glaring problem of bitcoin (and the whole crypto world) is that it has this naive "scarcity view" of currency whereas it is an in-your-face reality that a most important role of currency is to boostrap a credit system.

cryptobros have an obsession with inflation and rates side of government regulation and they seem to be completely oblivious to the credit system side of regulation - the two-tier private/central bank etc. maybe because they actually have no clue how the current system works)

so besides the inflation/deflation challenge I have yet to see any proposal how one could have stable decentralized unregulated credit markets and would be quite interested if people have serious relevant references.