I haven't read full original writings of Gurjieff, though I have read a book about him, with lots of quotes by Colin Wilson. I also knew one person, for a while, who was a disciple of Gurjieff and he was quite messed up...
But it would be a mistake to judge a teacher by their students... really.
My testings say the Gurjieff was connecting regularly to Source. None of his students did.
That is the story of most spiritual teachers that connect. They attract the hungry, the seeker, but they don't teach them how to connect to get their own knowledge because they don't KNOW how to connect.
Gurjieff was no exception. He didn't even suggest that people connect. He didn't know he was connected. He just taught what he "knew" from Source.
His students, like James J. Traitz repeat it. I am not saying what they say is not accurate: my knowledge of the work nowadays is non-existent, apart from the one youtube video I watched.
My problem is that they are speaking from learned knowledge, not from connection.
Unfortunately all the knowledge in the world doesn't make a lick of difference: it doesn't effect your history and ego levels of existence and therefore they don't change anything.
Gurjieff vibrated at 330
Mr. Traitz vibrates at 210
truth value: 9.5%