Mmt requires monetary sovereignty. The way you get to have monetary sovereignty in a global economy with fiat currencies is through military might.

That’s not to say the use of force is bad. It is to say that mmt freaks need to examine what would happen if they went mask off and said “a dollar is a dollar because I say so!”. Instead of what is possible after they do that.

Would everyone else in the world do the this is fine meme when America begins a new layer of extraction laid over the top of their entire monetary system so we can have single payer or light rail or ubi or whatever?

No matter the system of social organization in the global hegemon, mmt would amount to extraction by arbitrage.