"Keep the budgets tight" was the mantra in the early 30s in response to the depression. It took a World War that killed millions of people (and was -- surprise! -- a major artificial government stimulus) to get out of it.
Yes, providing monetary liquidity and fiscal stimulus during times of extreme stress is not purely good. It can have an effect of keeping some companies alive that perhaps should not be. That is bad and we should try to minimize it in the context of a recovery effort. But the fact that it's not perfect is not a reason to claim that burning everything down and creating a decades-long horrible depression in which many die of starvation, and that cripples the country, is a preferable alternative.
They think that if you let everything burn down then green shoots will pop up and everything will be happy and folks will rebuild and it'll be better and the government oughta get its snout out of our business and just let pure capitalism run its course and...