The students who bought the food at the lunch sales most likely did not care what their money was going to. This was not like paying taxes, it was getting restaurant food at a markup at your high school. I'm sure that those who actually thought about where the money for their food was going were few and far between.
The end-result of this hack was that the student government opened up selling outside food at lunch time more often for more clubs than previously allowed.
I see this as good for everyone involved, with the possible exception perhaps of the poor kids.