It is. But sticking to one asset would be a mistake and we should consider diversifying our money into different assets.
Gold, Bitcoin, Real Estate, Bonds are some good ways to diversify but we should also consider holding some liquid cash in case of such crisis.
We never know how long it can last and how deep it can impact the economy and so holding cash for daily expenses would be a good idea.
I don't understand why you have such thought.
During crisis, your fiat will become worthless because the inflation surge really high.
During crisis, your real estate will become worthless too because no one want to buy it and many people would harm any buildings due to chaos.
During crisis, bonds will be worthless too since the government is struggling.
Gold need a good space and heavy, it's not flexible.
Only Bitcoin which can escape from everything I mentioned above.