The Federal Reserve says it aims at 2 percent inflation over the longer run. The sentence is a policy framework. It is not a warranty that the next CPI print will cooperate.
I think the public argument goes wrong in both directions. One side treats any reading above 2 percent as evidence the framework has failed. The other treats a friendly month as the end of the problem. Both readings steal a conclusion from a target. The target tells you what the committee says it wants. The index tells you what the basket did.