No one would debate the value of Gold and its bright future. We don't have to actually listen to anyone to realize that. But Jim Rickards will have to listed to Bitcoin experts to realize that it is better to have a diversified investment portfolio.
You're missing the point, what Jim Rickard's saying is that it's better to buy gold now that it is relatively cheaper instead of rushing in when it's no longer available for the common joe. Gold is a good investment that you can't go wrong with because of it's constant uptrend. It's not bad to make a diversified portfolio but it's best that you include gold in your investment because of it's high profitability. Basically insuring yourself of the future.