Government jobs created that way decreases the ratio of aggregate demand for labor for business/aggregate demand for consumer goods and the ratio of the aggregate demand for capital goods/aggregate demand for consumer goods. Decreasing the first ratio leads to lower wage share of consumption, which means even greater inequality, while decreasing the second ratio leads to lower productivity of labor and lower total productive ability, which leads to lower standard of living for the average worker, and less prosperity for the middle class and the economy as a whole.
Simply put, government employees don’t pay taxes; they consume taxes. Those people would, in effect, be working for the government.
That is not to say they don’t file returns, and return a portion of their consumed taxes back into the treasury; it just means that they are a net loss in the tax equation.