It isn’t a good argument against Austrian economics that someone might come up with a science that made better predictions. You have to show us the science, so that it can be compared with praxeology. Suffice it to say that this hasn’t been done.
Doing things for money does not justify moral condemnation, unless using money to support your family, live up to the agreements you have made, and to try not to burden others justifies moral condemnation.
With oil prices in likely long-term tailspin, corrupt governments can't count on oil sales to bail them out anymore. But Mexico's government didn't get the memo and still clings to the state oil monopoly.
Thomas Kuhn influenced Rothbard by demolishing the notion that the history of science is one of continual progress. The truth is that once a paradigm becomes established, its basic tenets are not questioned at all until major problems crop up.
"Saving lives versus saving money" comparisons confuse ends with means. The end of saving the economy is not to have more money. The end is to have resources necessary to preserve the lives and health of countless human beings.