"Mathur notes, of course, that while government workers play an integral role in our society, it is the private sector that ultimately spurs economic growth and creates the vast majority of U.S. jobs."
True, but even more important and too rarely stressed, only private-sector jobs produce wealth, that is, marketable goods and services. The definition of prosperity is what one can buy with the proceeds of one's labor, and the volume of such wealth produced at a given cost, via supply and demand, determines our prosperity as an economy.
We need some government, but it is too often ignored that, on a purely economic level, every government job takes a bit out of our overall material psosperity.