I am seriously scratching my head over this one, because it doesn’t relate to what I am saying?

How does input output used for planning negates the need for a financial system? How are socialist enterprises and organizations going to settle payments among one another, and with the State Bank? How do socialist enterprises pay their workers wages? How do the Soviet citizens pay for services?

The problem is not so much how to plan the economy, but how are you going to finance the economy.

MMT answer would be to hose with roubles needed insdustries and take in taxes surplus to stop inflation, where on earth that relationship was used in ussr

?? I literally just described how it works in my post above.