I think the “don’t hold it don’t own it” advice does make sense for a small amount of portable gold if you’re considering a scenario like a fascist government taking over and needing to flee the country with any wealth you can, predicated on the assumption that other countries are still relatively stable.
There are also a lot of silly people who hoard pounds of gold for apocalyptic currency which you’ve pegged.





You don’t need (and can’t afford) a suitcase full of gold unless you’re obscenely wealthy and can probably just charter a plane anyway. There are hundreds of accounts of e.g. Jews fleeing Nazi persecution (and Nazis fleeing the allies post-war) carrying wealth for bribes or starting over or what-have-you in the form of gold jewelry worn on the person or gold coins.