Ridiculous to think that means that we'll have a famine.
Perhaps 'famine' isn't the right word. The comment was made in terms of spiking fuel prices and lack of availability.
With the decrease in on-premises or locally warehoused stock, and reliance on 'on demand' inventory maintenance, it would not take much of a disruption to cause the resupply mechanism to be insufficient or, in the instance of a major problem, to break down entirely. Disruptions in fuel supply, computer systems, transportation routes could all cause the shelves to empty without anything to restock.
Consider grocery/convenience store shelves before a hurricane, (or electronics store shelves afterwards).
Any panic only accelerates the process.