“Hoarding” is code for savings certain people don’t like. These same people then argue that your “hoarded” property is illegitimate and so subject to confiscation in the name of the “greater good.”
This is of course silly and hearkens back to old dusty ideas about the “velocity of money” etc. Wealth comes from ideas not money supply. If the economy provides enough opportunity for return on investment people will exit any “hoards.” (At least to a very large degree.) But in a world in which ROI is increasingly difficult due to poor economic and societal management people are going to be inclined to save.