It might be that in the public some crypto currencies are more valuable than gold, say the bitcoin for example. But the thing about crypto is that it is too unstable, its in the top of the market now but its anyones guess if it stays there or if it dies, unlike gold it doesnt plummet to the depths of value randomly, but through out time gold stayed and becomes even more valuable. What im saying is, crypto might seem like above gold but its unsable and no one knows when itll turn to nothing.