I have a "1973"-dated Yugoslavian military manual on the M70 and M70A which covers the milled receiver version with the lightening cut on the right side. The full-buttstock version is listed as the "M70"; the underfolding buttstock version is listed as the "M70A."
I don't believe that member ever laid claim to knowing everything or gives the impression as such. He has been quite a student of the Kalashnikov for a great many years and actually helped to provided one of the best photo guides for references around. I've known him for many years and he's always been very insightful on the technical aspects. No single person knows everything. But he's been a Kalashnikov Collectors Association member for a very long time and has devoted a great deal of time, effort, and money into studying it - visiting numerous museums throughout Europe and Russia, interviewing folks, photographing every variant he ran across, having access to literally hundreds of Kalashnikovs to study through the military, made available a lot of rare Kalashnikov accessories that weren't very known in the US, etc. No "king" - just quite a knowledgeable fellow that's helped people do countless Kalashnikov clone builds. Many of his photographs have been used on a lot of forums by people that really don't even know where they came from.
Sometimes we, as Kalashnikov enthusiasts, hobbyists, and interested parties often don't agree with exactly everything. And the fact that there's often conflicting information/no pattern to the Kalashnikov at time definately doesn't help, either. But please watch how you speak about another fellow collector here who I believe is also a member here - there's more than a few members here that are members of that other board and no one has mentioned anything about what happened with you over there.