You don't understand anything. Central banks are afraid of gold, that is why the price is manipulated, if they print too much money gold goes up and people become afraid. It is like an indicator, a canary in the coal mine.

If gold has no value anymore, if no rare elements exist anymore, this will be a game changer because commodity money will be history, forever. The concept of intrinsic value will be gone.

Fiat has got no value, but in the future there will be no other form of real money (gold, silver etc.) with intrinsic value either, so the only alternative to fiat money, is crypto currency. No intrinsic value, but cannot be created from thin air at least.