It overcomes a simple reward-system. It works in terms of surplus. This is an original Christian message from your original Anti-Christian. She dizzies with gifts. It's okay to trick someone into receiving a gift.
Tricks are okay.
It's okay to give someone an object, but never tell them you fished it out of a dumpster. That's not okay. This whole spiel is not just simply a communitarian impulse. The ascetic ideal tries to share the misery rather than spread the joy. The ascetic ideal wants to enforce selflessness in others.