0 feedback is exactly what you get from 1 wish. "Feedback" isn't just information, it's something that can control a system's future behavior - so unless you expect to find another genie bottle later, "Finding out how your wish worked" isn't the same as feedback at all.

I think it was clear that I inferred this as the new definition you were trying to substitute. I was very nearly as impressed as if you 'corrected' him by telling him that it isn't "feedback" if nobody is around to hear it, or perhaps told him that oxygen is a metal.