The "frustration-free packaging" is incidental. The whole point is that Amazon will be saving a lot of money by not shipping empty air around. If you can send the same thing in a smaller package, this means you can fit more packages in a singe shipment to the warehouse, ship more things from a warehose to the distributor, and also send more things in a delivery truck at the end of the delivery process. Everyone saves along the way, meanwhile the customer gets a "furstration free" package, which truthfully, is probably easier to open, incidentally.