The theory is flawed.
There is impossible to have 2 currency at pair to collapse together.
If USD collapse, and RM also collapse, exchange rate will remain the same at 3.15.
Also, no currency is backed by USD, irrelevant.
If we do reach that stage, all paper money cannot be used, you may worry more about war, aka the society become chaotic, and your gold in your house may be robbed or even confiscated already.
When you need gold to buy foods, you better worry about your life and your family safety, not gold anymore.
If buy gold because of worry about currency become devalued due to inflation due to massive money printing, then yes, it is logical.
But to say USD collapse and RM collapse and so does the rest of currency also collapse, every paper money cannot be used this is flaw already.
Currency exchange work in pair one.
If USD does collapse, it just means at least one currency is appreciating, just like Yen recently.
Yes, if you view bank will bankrupt, please buy as much as physical gold you can, as well as borrow as much as you can to buy gold.
How many countries are borrowing money to the US? When the USD collapse im pretty sure that the other countries unable to get back their money. Which country borrow the most to the US? Where did malaysian bank invest to? Im not talking about foreign exchange and of course i know foreign exchange works in pair.
Why did the US hold the physical gold instead of paper gold? They could save alot if they hold the paper gold and not building such a big vault, they could sell off all their gold to pay off some of their debts and purchase it back in the paper gold, why they didnt do it? Why recently many countries start to store physical gold? Why not diamond, diamond is more expensive than gold. Why not platinum??