> gasoline was by far the largest contributor to the monthly all items decrease

Biden is emptying the Strategic Reserve to temporarily lower gasoline prices as a political maneuver to bring down the CPI (temporarily) so people like yourself will congratulate him. Lol. Meanwhile according to your own link pretty much everything else is still increasing rapidly -- food +10%, electricity +14%, shelter +7.5%. You're going to say, with a straight face, that we have negative inflation? What a joke.