This book is about spirituality, and some people may agree or disagree with it. The author does not try to convince anyone of what he says. What he talks about has been talked about by many different cultures all around the world.
This book deals on so many subjects, from reincarnation, to karma, to the wheel of life (Samsara) to initiations, enlightenment to how to achieve internal peace, internal change, etc.. And yes it also deals about sexuality, how could it not, it is one of the most important aspect of life.
That "greatarchangels" does not agree with what is written is fine but to go ahead and call people liars, religious right, that it sets you back in the middle ages, and insinuate deception and spread such a negative and false light on the author IS really NOT on.
I've read the book, and what I liked about it, is from the get-go the author just tells you NOT to believe in what he says, but to gain experience and form your own knowledge from your own experiences.. And to be wary of beliefs old or of making new ones - that it leads to a dead-end.
So truly I don't know where the deception is.. I guess perhaps when someone wants to believe only, and when that person reads something that does not agree with his/hers beliefs and the they choose not to challenge themselves and look for truths, and just get stuck on the belief part, then a huge denial, or not wanting to face what else could possibly is too much for them.
It makes me think of the allegory of the Cave by Plato.. It seems very fitting here somehow.
Anyway, it's a good book, but then you have to be interested in spirituality first, and I guess have read a few books already and have some experiences on the subject. But it's clear and does not pretend to be anything else than what it is.