I decided to read through the rest of the article right before your comment. It pretty much went where I thought it was going. I do realize it was not just about saving money, but all of the other things you listed. My eating habits accomplish the exact same things (saving money, eating healthy, saving time, feeling productive, etc). The only point I you might be able to argue is saving time. As it turns out, cooking doesn't really take that long. In fact, I think I could cook, eat, and clean faster than I could walk to a crappy campus restaurant, eat, and walk back. Hence, time saved.

The major difference lies in the consumed food. You eat the same (arguably boring) food over and over, and I eat almost whatever I want, switching it up every week and keeping it delicious.