Earlier quoted context omitted.
And to add to your explanation, because inflation jumped so quickly and then slowed we'll eventually hit a YoY number that plummets. If milk is $4/gallon today and still $4/gallon 12 mos. from now, that's 0% YoY inflation. This will inevitably lead to people saying the numbers are fake because milk used to be $2/gallon.
If "inflation is transient" when is it going back to 2/gal?
“Inflation is transient” fits prices increasing and then leveling out, and does not imply that every bit of price increase is balanced out one-for-one by immediate deflation afterwards.
As for gas prices, it’s going to depend on supply (including refinery capacity) and demand. The $2/gallon of April 2020 was an artifact of covid nuking demand.