Will MMT work? No, good money drives out bad in a fiat world. Interest charges would rise and hyperinflation would follow. Deflation, bad for banks and elite. Inflation, good for banks.

Will MMT work? Maybe, if the premise is the "government" prints whatever it needs. Why is there a need for the Federal Reserve, why borrow and print interest at all? The interest saved would pay for many of the programs of the Green New Deal. In a round about way, it seems like MMT is the first stages of prepping people for a monetary change.

Is MMT perfect, no. You still need to have money tethered to something (ie gold, silver etc). Still in the early thought process of this.

Most of the articles below note you just print money to pay interest.

https://mises.org/library/upside-down-world-mmt

https://www.bloomberg.com/news/features/2019-03-21/modern-monetary-theory-beginner-s-guide

https://www.nytimes.com/2019/03/29/business/modern-monetary-theory-shiller.html