The collapse will CAUSE the “zombie apocalypse”.
If, by “zombies”, you mean the hoards of gov’t check zombies that will be roaming the countryside demanding to be fed.
And that’s what “Zombie Apocalypse” is really referring to, in a codeword manner.
Urban zombies don’t wander or roam. They wait to be fed.
Sitting on a vast hoard just turns you into a supermarket of free stuff. Think Branch Davidians.