It is hard to take peoples arguments of cost seriously when governments around the world are printing fiat at alarming rates. Covid has proven that where there is a will the money can be found.
That printing could be good or bad, but any argument based on “run printing presses as a way of raising money” doesn’t address any of the issues. Nobody has advocated that in decades (the odd Zimbabwean despot aside).
* I’m not claiming economics is anywhere near as scientific as chemistry or physics, heavy trappings of math notwithstanding.