Yes.  

You need to understand the distinction between absolute scarcity and relative scarcity.   https://sfugeog322.wordpress.com/2012/01/19/absolute-and-relative-scarcity/

None of the other commodities which are controlled by the futures market have absolute scarcity.  Gold can easily be mined, pigs can be bred, marginal cropping land can grow more corn.

Many of us, including many on this wall, are now dedicated to slowly, gently buying physical all the way down, no matter how deep it goes or for how long. Holders of last resort will create conditions of absolute scarcity.  

The reality is that the poor performance of gold and silver markets is a reflection of poor organic demand for precious metals, combined with elastic supply.  People like Roach blow this up into a global conspiracy so that they can avoid taking responsibility for their own poor investment decisions.  There is undoubtedly short term manipulation in almost all markets, but whales can only push the price in directions that the price already wants to go.  

For the record I do not think that the current downward price pressure on Bitcoin is a manipulation. I think it is a perfectly natural and organic reaction to a blow off top.