In that mythological example, New life was not created from rocks, merely modified and passed on.
My contention is that JW theology on this would allow them to argue that life created by humans is of the same order of angels collecting dust (or whichever inanimate materials are supposedly required) and making their own bodies to impregnate women.
There is nothing really in their teachings which dictates how life should be transmitted. Do 'test tube' babies have 'spirit' in JW theology? But sperm isn't 'alive' (every sperm is not sacred), nor are eggs.
Cofty, and others, obviously disagree. But as we're dealing in hypotheticals based on utter gibberish masquerading as teachings there's little point me pursuing this. :)