Earlier quoted context omitted.
It's the same story. He worked for his groceries rather than working for money to spend on groceries.
yeah but in working for his groceries, it doesn't seem as though he created any value to anyone in the process. I guess he was brand loyal, but it seems like the work didn't benifit anyone else in society, which is in contrast with actual work.
Sure he did. He created value for himself by working. After all, in a pure economic sense coupon cutting is as valid work as log cutting.
Perhaps you are confused by the fact that he was working for himself? Say my current food expenses are $15 a day, so I hire that guy to shop and cook for me for $10 a day. Clearly he would be creating value for me.