I've found (yet) another ripoff of the Ahyeh/Elyon. This book steals a lot of principles from it, and from what I can see, was written by a New Ager who modified it for the convenience of the "Anunnaki Space Aliens" theory.
Honestly, at this point, I'm not even sure how many people are using the Ahyeh as their inspiration.
Looking over it, I found it interesting, if convoluted and rather incoherent. I've seen what you are saying, actually, where various would-be cults out there seem to be directly taking parts of our teachings, and claiming them as their own, without crediting our scriptures. They almost always remove the moral equation, even the notion of a personal God. Run across many YouTube gurus, who are now focusing on the theme of how to escape reincarnation, for instance. Spirit has does not care who gets credit for this or that, but only the spread of truths contained in the message -- preferably without the removal of God and morality from the equation.
I tried reading some of it and have a hard time seeing how it is a ripoff? What exactly makes you conclude that the writer has read the Elyon?