Well, this is some of the stuff that makes it Gnostic:
- The reference to Sophia as an aspect of godhead.
- Samael, a creation of Sophia, as the creator of the material world.
- The references to "the rulers", which are creations of Samael.
- The way the story of the snake in the garder was twisted -- the snake's actions in deciving Eve was guided by the "female spiritual principle", which appears to be another way of referring to Sophia. It looks like Man's fall from grace was from the grace of the creators of the material world, and that fall was orchestrated by an aspect of Godhead.
- The recapitulation of the nature of the rulers of the material world by Eleleth, and how those rulers are not the same as the rulers of the "limitless realms", who are incorruptible, and (one assumes) aspects of Godhead.
As for whether or not it is the ravings of a madman, or one touched by God -- I cannot tell the difference.