Why would it have helped to keep a mix of currencies under Bretton Woods, since only central banks could have exchanged them for dollars and then for gold? Why not try to accumulate as much gold as possible in that scenario?
Discussion
If everyone had a mix of currencies before they did it, seems like there would have been a rush to exchange Bretton Woods currencies for real ones, and central banks refusing to serve exchange customers in that way would be attracting too much attention to their scam and also probably making their physical locations targets
I'm not sure I fully understand your argument to be honest, especially as it translates to the current conditions.
Are you saying that individuals should hold a variety of currencies, both traditional hard monies and cryptos other than Bitcoin, because if everyone converged to holding Bitcoin only then it would be easier for authorities to fight it?
I can see how it could be more desirable for authorities to target Bitcoin if no alternatives existed, but I don't see how it could be easier. How would they go about removing the 21M cap for example?
Converging on Bitcoin not only makes it easier to fight but also expresses millions of people's willingness to not fight back, just like people converged on the dollar, seemed like they wouldn't fight back, and didn't fight back
Removing the 21M cap could be done by threatening miners with violence, just like everything else (e.g. gold confiscations)