And the concept of "printing money" misrepresent the system (come on, you print cash, that is just a possible physical mean to register a credit, like as you know electronic hardware just enable computer networks but enstablishing a connection and exchange information doesn't mean we physically build a server, so don't confuse the physical mean with the information or the hardware and the software).
Often in MMT "issuing money" is deficit public spending. The State is in fact the only economic subject enabled to spend without credits, because it "creates" them when spending. Doing so it create a difference between the amount of credits in its national currency and the amount of debts in favour of the former... you can see it like electric potential difference that makes exchanges possible in the first place like with the electic current powering a circuit.
So yes "printing money" doesn't create wealth per se but it powers the economy and people with their work create wealth, a bit like a power generator doesn't create electrons or other particicles with mass but makes them move to provide power that goes into actuators.
