As for protection against authoritarian actors. If your state has already gone full panopticon, crypto won't save you, indeed the state will mandate exclusive use of their chosen crypto, gaining even more visibility into your life. If your state has not yet done so, you should fight to preserve liberty and the rule of law. If your country turns into a full-out surveillance state, you are not going to overthrow it by buying things with Bitcoin.
I would like to see some data on what actually valuable applications or businesses have been enabled (or simply improved) by crypto currency. I regret that the only business I know to be benefiting from bitcoin is ransomware.