I know several people who have brought jerry cans to petrol stations. None of them were panic buying / hoarding. All of them were buying fuel for other people who were literally at zero, having burned whatever little they had left in queues that led to nothing.

Beware the assumption that jerry cans == hoarding / panic buying. It's great for tabloids to stir up anger and resentment, but the real world is always more nuanced than the headline.