The book told about more than just the Volkihar, why do people ignore simple facts right in front of them?
And? how does that make the book truthful? If your going to sell a lie make it partially true. A Volkihar writing down accurate info on other clans while lying about his own makes sense.
You are just too much of a Beth really devoted fan to admit they F*cked up.
The series is filled with contradictory books, they design the in-game books to be like real books not always accurate. Plenty of the history books conflict. http://www.imperial-library.info/content/immortal-bloodeveryone loves so much classifes Immortal Blood as http://www.imperial-library.info/categories/fiction . Which means "Books that are made up by their authors, and may not have happened."
It didnt reveal anything about the Order, It said they were well hidden and it was PROVEN by the fact that Movarth could not find any
It gives away thier feeding habbits, the fact the can hide among humans which not all clans have.(such as the three in morrowind). It even gives away how long without blood untill their nature is revealed. And your assuming Movarth
as described in the book really existed.
Maybe Movarth wanted to be famous so he published a book about himself.