There is a limit to how long government can borrow money and give it away go citizens who are not working
But there's no limit to how much money a sovereign government can create (not borrow) to fund a Green New Deal infrastructure project, for example.
Millions of living wage jobs would be needed for such a project, and unlike socialism for Wall Street, those wages would be directly spent on goods and services in the productive economy. Billionaires would be taxed into extinction, and the FIRE sector reduced to where it was in 1945.