People will bitch about this as they already have, but Spirit and Allegiant Air's massive profit margins have shown that the only thing people care about is the price of tickets and this helps lower it.

Eventually, airlines will follow the single aircraft model (meaning aircraft manufacturers will merge and jobs will get cut), aviation jobs will largely be contracted out and, once the American airliners win their flags of convenience battle, the glory days of being a pilot will finally be over.

Enjoy your snack packs.