Capitalists don't hoard... Do you know how much money a rich person loses if they hoard their money? Do you even understand inflation?
There are actually one group of people that hoard and that is Bitcoin/Bitcoin Cash holders. But if they where to all dump Bitcoin and put it into industry it would tank the price hard.
I would think that if they sold it for fiat it would tank the price. I don't think spending it has that result though.Spending might have the opposite effect. You are correct though.