I'm not unconvinced by the idea that businesses in the US dulled inflation by pulling forward stock purchases and stockpiling goods. But 9 months worth of goods? SMBs can't afford to do that. Large enterprises don't have the warehousing capacity to do that.
Could you imagine Amazon increasing their stock on hand by 30%? Maybe. Could you imagine them quadrupling their stock on hand? Seems unlikely.
Impacts should've shown up by now, most of the stockpiled goods would've been sold down.