Earlier quoted context omitted.
Government spending "creating jobs" is a lot like a business plan where you pay people to buy your products, or a car that makes its own fuel.
Well, in the literal sense, the government can raise revenue via tax and employ people. So it's literally true... You might not like it, or it might be ill advised, or might believe that all taxation is theft, but it is what it is.
Money represents work, and the government is waisting billions of dollars of highly trained professional work hours on the SLS. This money could have been used in unaccountably more productive enterprises, but the incentive structures and feedback loops are so broken in government, it can't even build a rocket ship, in an era where every two bit backyard company is building their own.
The taxes raised to pay for SLS actually are screwing over the rocket industry because companies actually getting things accomplished have to compete for the highly trained engineers and scientists being wasted on SLS. There's no amount of "trickle down theory" that makes the SLS a net gain for society.