Earlier quoted context omitted.
Quartz is really owning this genre of badly misunderstanding what the mint does. The cost of manufacturing coins is an expense that has no bearing on the denominated value of the coin.
The point of currency is to facilitate commerce and pennies don't do that. You can't use them in parking meters or vending machines (for example) so we're spending tax dollars to create objects with no function.
As the parent said, the manufacturing cost is orthogonal.