Is my devaluation plan MMT?

 Absolutely, 100% MMT up to 2% double spending with a three point error band.

MMT is all about the inflation tax, the real thing, actual single entry accounting. The difference is that MMT is restricted by prior contract with the Due Process banks managing the tax dollar. Due Process is specified, even required in the Law. The Fed has already been sued once for violating Due Process banking, but they won.

But we are not having nice things, we are minimizing the amount of lost inventory, it is losing less money this time than last time. Smoothing the curve around hard boundaries, like the MMT law.