The problem With MMT is it focuses way too much on government debt when personal and private corporate debt and asset inflation what and where of the problem.
Of course if you integrated price deflation painlessly and beneficially into profit making systems by tying a discount/rebate monetary and economic policy to the point of retail sale you slay both the austerity MMT correctly abhors, the build up of personal and private debt and all forms of inflation in one fell swoop.
It won’t be the “withering away” of the state as both Marxism and libertarianism advocate, but the illegitimate monopolistic monetary and financial paradigm of Debt/Burden/Additional Cost Only….that dominates the state, the individual and all of the other actually legitimate business models in the economy.