That's a really astounding statement. Basically, I think there are only two types of employers. Businesses and government. When government is the employer your salary is paid out of taxes. Those taxes are taken from the economy. So, even if no businesses ever hired anybody, and say, worked only with robots, they would still be the ones creating the economic growth necessary to provide government jobs.
I guess, with the power to print money, the government could eliminate taxes and just print money to pay everyone. But I wonder what the dollar would be worth in such a situation. I don't think much at all. Then again, I guess there'd be nothing to buy with them either.
Customer demand creates jobs. Giving money to profitable businesses doesn't do anything because they are already capable of hiring more but don't. Giving money to consumers works better because the money is spent and creates demand for labour.
You should look up Modern Monetary Theory. The Grace Commission said in the 80s that most of our income tax money just goes towards servicing the debt. In polities that can print their own money taxes are a way to manage inflation and reduce spending power of certain sectors of the economy.
On the other hand austerity for polities that cant print their own currency can be used as an economic weapon, such as how it disabled the governments of south Europe, who got a raw deal joining the euro and losing the ability to print their own money.
Elasticity can be a good feature of a money supply. Having 21 million bitcoins chasing an ever increasing amount of goods and services (and other fiat currencies) will make people hoard them / "save" them which will lead to banks which will lend derivative M2 money based on reserves which will lead to small banking instability which will lead to lenders of last resort and fractional reserve requirements by their jurisdictions which will lead to Gresham's law kicking in and the derivative money driving the bitcoins even more out of circulation which will go right back to the system we have now.
I guess, with the power to print money, the government could eliminate taxes and just print money to pay everyone. But I wonder what the dollar would be worth in such a situation. I don't think much at all. Then again, I guess there'd be nothing to buy with them either.