What I’m reading is that MMT adherents state that governments can never go bust as they issue their own currency. Debt is therefore never a problem. In fact, they hold that there is no need to issue bonds (just ‘print’ the money). Of course this is mana from heaven for socialists: a promise of unlimited spending by governments with no consequences.
In my view this rush to embrace MMT from all quarters is a push to vindicate - after the fact - the (failed) policies of central bankers.