"Using counterfeit money is arguably OK because some of the people who use it might need it, or see the need to earn a living as a needless waste of time as long as there's idiots who'll accept fake currency".
The issue with counterfeit money is that it devalues the worth of all other money.
But given who holds the majority of the money being devalued, given the extent that money is already being devalued for the benefit of some at the expense of others, and given that the idea of taking a relative to wealth portion from the group for the benefit of the poor is a form of redistribution the group already engages in regardless of the consent of the giver, I think you can easily construct an argument that it is not immoral to use counterfeit money as long as you pick the right targets.
"Using counterfeit money is arguably OK because some of the people who use it might need it, or see the need to earn a living as a needless waste of time as long as there's idiots who'll accept fake currency".