…at 3AM.  This is a very interesting interview, although I should note that it is implausible that Nietzsche was positively influenced by Rousseau; the similarities Neuhouser points to–"Both genealogies have 'de-naturalizing' ambitions—they reveal the human-made character of phenomena normally taken to be natural or merely given—and…both emphasize the contingent nature of the developments in question"–reflect ideas and themes important in German philosophy and culture, starting with Herder.  There was no need for Nietzsche to look to Rousseau for such an approach, and no evidence he did so.