In an extreme "Mad Max" SHTF collapse scenario, if things really turn that sour, we're all doomed for anyway, and either death or running for holes in the hills with provisions, weapons and ammo might be the only options left.
That has happened countless times before. The gold is there to be hidden when the crisis hits and uncovered when it abates. Buying weapons with all your stash will likely not increase your chances of survival, but will ensure that you don't have the gold when its value is restored.
Ergo, if you await conflict, buy bitcoins, not ammo. Only MPOE-PR thinks that gold is bought to be spent during the hard times. Yes, that is stupid, but maybe she does not have enough experience on gold to utter much sensical concerning it.