Really, tell me one thing, beside the historical roots of the belief system, that some so-called scholar like Ron Geaves can teach us? 

Perhaps someone without emotional affiliation could provide a more objective perspective. It is another point of reference that goes into the hopper and contributes to a collective view.

Don't you think it rather weird that there are all these people who will bend over backwards to praise the hell out of your "friend" but who, for some strange reason, can never, ever criticize him?

Why do you think a person must publically criticize him to prove they are open minded? That is preposterous! For a good friend, you stand by them when their integrity is unfairly called to question. To be swayed to join a lynch mob by stupid arguments such as yours would demonstrate a spineless lack of integrity on one's part. And for you, to attempt to coerce another to join that lynch mob by such arguments demonstrates a corrupt and hollow moral ethos. That's you mate.