"I saved money on my long flight, because I used airline miles" is essentially saying "I already had cash in my purse, so I didn't have to hit an ATM". This is

"I saved money on my long flight, because I used airline miles" is essentially saying "I already had cash in my purse, so I didn't have to hit an ATM". This is related to the articles about living a week with a $0 food budget, by just eating foods that are already in the pantry. How did this drivel make it to HN front page?