It's not a myth.
You literally just proved my point with your post about how it has maintained it's value since 1980, a random quote from some bankster dude is your evidence against? C'mon!
Do you know what "store of value means"? Property actually fits this description as well. Milk, however, does not (it depreciates just a tiny bit quicker than FIAT's, but they are both, not a store of value):
