The subtle detail is that making the 1000 Trillion Coin itself has no effect on inflation. However if it's used to pay off the debt, then that is what produces

The subtle detail is that making the 1000 Trillion Coin itself has no effect on inflation. However if it's used to pay off the debt, then that is what produces inflation. The reason this distinction matters is that the President has the authority to create the trillion dollar coin, but does not have the authority to spend it. All he can do is grant permission to another authority to borrow against that coin, it's that other authority (the Federal Reserve) that would in turn affect inflation. The argument is that since the Federal Reserve is going to end up doing that anyways, one way or another, that this trillion dollar coin itself really isn't the cause of any inflation to begin with; it's basically nothing more than a formality.