The book posits a "dark moon" that orbits Earth, though Lilith is actually a "point" and not a real object--- nor is it based upon any valid evidence to exist. I have originals of the entire IMG-J book (hard bound) which I have studied for 12 years, and none of them are supported by reality.
Hey, do you know what I think? The author needs to take a chill pill and calm the fuck down about the stereotypes, that's what. And I say this as a person with fortunately aspected Sag Lilith conjunct Mercury in 8H mmhkay? After checking the published date though, I get why this is so icky but still... jfc.