Unfortunately, there is an issue with food pantries where people who are not in need use them because free food. People can be shameless. It is a minority but still too common and doesn't come with the stigma it deserves in some places. In Seattle, I've even heard a few anecdotes of people trying to resell food from the food pantries.

This behavior does impact prices in the normal market at the margin, particularly if it becomes normalized.

Says who? Would you prefer free bananas or paying?