Oh geezuz.
Just because a food has an expiration date on it, doesn't mean it's not good after that expiration date.
Most food-processors are really really really conservative about expiration dates, so as to avoid lawsuits.
This is just really stupid.
When I was in the socialist paradises of the workers and peasants with free medical care for all--the mid-1990s--there erupted a scandal over the treatment of military conscripts.
Since it all was for the "greater good," nothing was done.
Among the charges was that the Russian army was feeding its conscripts canned food that had been Lend-Lease supplies. I'll let the lurking primitives figure out how long ago Lend-Lease was.