It doesn't. The point is not that it reduces available jobs, but that nearly half a trillion dollars could have been spent more directly on any number of option

It doesn't. The point is not that it reduces available jobs, but that nearly half a trillion dollars could have been spent more directly on any number of options which A) don't involve blowing up people in foreign countries; and B) produce a substantially better quality of life in this country. Basic income, healthcare, even jobs just standing around that paid a living wage. It boggles the mind.