MMT = Keynes IS Keynes in that it’s a mere reform. Why? Because it does not comprehend private for profit finance (PPF) as a monopolistic, parasitic and hence illegitimate business model because it adds costs POST retail sale. Retail sale is the terminal ending point of economics. Hence PPF is non/anti-economic. (Spare me the mathematical justifications.) Furthermore it neither recognizes nor analyzes on the level of the paradigm/pattern thus rendering it inevitably reductionistic, palliative and non-resolving of the real problem which IS the current monetary paradigm of Debt Only.
The one thing MMT has going for it is that it philosophically aligns with the new monetary paradigm one of whose aspects is abundance.