What you're calling "heterodox" is obviously wrong, as there has been massive monetary expansion over the past several decades with relatively tame price inflation. The main thing MMT changes is allowing the legislative government to spend the newly-created money for deliberate goals, rather than it just being handed over to the financial industry. Given the massive price inflation we have experienced in housing, education, vehicles, etc - everywhere the new money has been able to go from the financial industry to consumers (to bring up average price inflation as per the overt policy) - I'd say that spreading the new money around more is a no-brainer.

Experimenting with a different approach might be understandable if the austerity wasn't aimed directly at killing the global goodwill that makes such monetary inflation possible - USD's status as the world reserve currency. As it stands, I don't know things would look any different if our country was being controlled by a hostile foreign power intent on destroying us.

You use the word heterodox as a thought preventing insult.

On the one hand we have a simple model that 1+1=2. On the other we have someone else proclaimed correct saying it’s not so. But it’s too complex for me to understand.