Russell thanks for this frank insight into what must be on the minds of many economists. I do sympathise that some things happening might be defying some of the basic principles you might have been trained to see as set in stone.
To me, MMT in economics seems a little like the big bang theory. Useful for a while, to explain a lot of observations, until physics gets in the way :)
I will use your thoughts here as the basis of a set of economist concerns, which I will attach to a new economist stakeholder in my view of the System Analysis, and trace to everything relevant, so as to be able to fully address your concerns. To me it seems pretty important that economists (Meaning everyone trained to think as such), are on board with all developments, hence why I think an explicit economist stakeholder is necssary. I guess you guys are traditionally who the steering elites turn to, when seeking advice and wisdom on what to do next concerning economy, rather than Engineers like me. I figure it is economists who are the key to what humanity does next :)