I am not sure you are acknowledging that you also are presenting a hypothesis of how the mere tapping of a rock could be picked up on the VOX. That is of course subject to the very same charge and fallacy you are putting to me. You are putting forward a hypothesis that is in direct contradiction with that of actual working application in decades of actual space walks. It simply does not happen. It did not happen with much larger impacts either while apparently on the moon.
This is of course is cognitive dissonance. You need two cakes.
Yes, I am presenting what I believe to be the null hypothesis. We have to have a null hypothesis, or we are adrift with no logical calculus. The only thing I am insisting upon, is that any claim that the null has been falsified - that claim right now is incorrect - plurality exists still.