> When a good's supply is constrained, it becomes a store of value. See: gold.

That doesn't make sense as stated, because every physical commodity is supply-constrained to some extent, even and especially the ones that are extremely bad stores of value. Picking on Fermium (it has a nice atomic number) - Fermium is supply constrained and it makes a horrible store of value because it rapidly morphs into something else.

Gold is a well-liked store of value because it is absurdly stable (about as close as we can practically get to indestructible) and roughly the easiest to physically store out of all the durable candidates.