I guess my main concern is "scholarship or crackpot rant"; sounds like it falls into the scholarship camp. I'll definitely have to check it out.
Well, the author is not a typical Egyptologist. I don't consider him a "crackpot." He does have an agenda, but most authors and most scholars do. He's not a non-scholar so to speak, he's a civil engineer, and he's studied Egyptology as far as I can tell a lot of his life. He is interviewed briefly here on this page.
http://www.egypt-tehuti.org/gadalla.html
From the interview:
M.G.: I didn't intend to focus on Ancient Egypt, just because I'm Egyptian. It was only after I began reading existing books about the subject, that I discovered how MUCH they knew, and how AWARE they were of the universe, in every action of their daily lives. Yet this information is suppressed in almost all of today's references and textbooks. I have made it my life's mission to get the TRUE image of the ancient Egyptians out to the world, for those who are ready to hear it