The gov was giving out money and the fed was "printing" trillions [printer go brrrrt" memes and all] adding to national debt. How in the name of any working ec

The gov was giving out money and the fed was "printing" trillions [printer go brrrrt" memes and all] adding to national debt. How in the name of any working economic theory can they think that WILL NOT lead to inflation? Were they in an alternate universe?