> This crisis has also proved your assertion wrong - witness the mass buying of perishable foods and toilet paper.

It hasn’t at all. For starters, non-perishable food was absolutely the first to vanish off the shelves. But that aside, buying too much has no detriment at all to the purchaser. The risk that they may not consume all of it is so incredibly minimal compared to what they’re actually worried about. This is only possible because prices are artificially constrained. Most people don’t have to face a considerable opportunity cost when buy way more food than they need.