MMT predicts that if you print money you don't necessarily end up printing money but if you print money you definitely end up printing money.
People don't understand the difference between printed money and printed money that was printed.
It should be pretty obvious. If the central bank prints money but the government doesn't print money then no money was printed except when people withdraw their printed money into printed money. If however the government does print money it will definitely cause inflation (classical economists and MMTists agree). It is especially likely if the government prints money into the form of printed money.
Also MMTists think "MMT" shouldn't be done as it is too much like printing money because MMT is a theory of money and accounting and not a theory of printing money unlike "MMT".
I don't know why I wrote this. I believe in accounting identities which are sort of MMTish so I knee jerk when people violate accounting identities by building straw men and reusing the same words to use completely different meanings for the same of political framing.
For god's sake you can't even use money printing in its original meaning anymore. Aka governments physically creating money to increase the money supply without supplying goods in return which as I mentioned above is a bad idea.
You know the difference between the various types of "money printing" that distinguishes them from the political framing is that the ones done the most have a sort ratcheting mechanism that forces the money to come back eventually. In other words, if there was no threat of deflation, via negative interest or whatever mechanism of your choosing, then the mechanism of money creation would unwind and the money would disappear on its own without causing inflation.
Alas we don't live in that world. Deflation is scary and must be avoided so we are stuck on this inflation treadmill until people wake up and accept mitigations to the dangers of deflation which then gives central banks, governments , businesses and private citizens more leeway to steer the economy towards their preferences and away from permanent inflation and money supply increases. So the inflation treadmill it is...