He's completely right. But not only that, even if we ever get a fiat collapse any time soon, I think bitcoin would also tank anyway. It's simply too early and liquidity is too low for people to actually sort of "trust" the asset. In the long-term future though? That's where I'm really really bullish.
No, i don't think any fiat can pull bitcoin with it. That's the whole point.
For example if the USD fails, bitcoin price expressed in USD will go crazy up, then you can no longer reliable measure bitcoin performance using USD, you will need to switch to whatever fiat survives, or something different like gold.
Indeed if one of the major fiat fails, i think it might pull the other fiats, but not bitcoin, not too much anyway.
Bitcoin has performed quite well under the circumstances, and anyone with bitcoin should simply wait to the crisis to go over. Those without bitcoin, should take this opportunity to buy more, before their fiat money collapses. Even if it never collapses, bitcoin will recover to about where it was before the virus, eventually so its simply a matter of time.
People don't lose anything, unless they are playing at margin trading and did the wrong move. Margin trading is always very risky anyway.
Since Wuhan is already declaring end of virus, sooner than later China will restart production, and what you perceive as bear might suddendly turn bullish, if only to race buying cheap (anything) while it lasts...
This thing i'm sure: Even after an economy collapse, bitcoin will be there. But your fiat might now. Are you willing to take the risk? Yes the problem is that you have yet to experience a hyperinflation, you think it might never happen to you, your coin is just too strong to fail...
Bitcoin fluctuates, but its true and honest, while fiat and pegged coins (ie. "stable") are time bombs waiting to happen. IF it happens, you won't have time to flee into bitcoin, it would be too late.
So if bitcoin is no hedge, fiat is even less of a hedge, and stable coins are much worse. This is like a bank before a bankrun, all the trust you place in your bank won't save you if it does happen.
Winklevoss bros. are free to do and say whatever, they already made their money in the previous crisis. Did they miss this one? I think anyway paying attention acted in January when it was beginning, before it spread to the world.