Monetary Policy is Non-Linear

The relationship between interest rates and inflation is non-linear and non-monotonic, and in exactly the same way that the Fed was unable to spur inflation by cutting rates to exceptionally low levels, so will they be unable to contain inflation by hiking rates off these exceptionally low levels.

The Fed first has to get interest rates to this monotonic tipping point before further interest rate hikes will have any appreciable effect in the real economy.