Curious, at one time in my life I was really interested in the post 1917 period of WT history, and even toyed with the idea I might write a book on it sometime. Looks like someone beat me to it. Good thing, I don't think I would have done a good job anyway.
I was convinced that a most of the things I really hated about the religion came from that time period and were the result of Rutherford. I collected and read much of the Bible Student literature available at the time. Even had all the Epiphany Studies by PSL Johnson. Reading all that stuff gives context to the rantings of Rutherford. There was definitely a rivalry between Rutherford and the Bible Student leaders for the minds and hearts of the Bible Students. I still believe, for instance, that Rutherford's choice of the name 'Jehovah's Witness' came out of this confrontational environment. He wanted to 1) differentiate the WT-associated Bible Students from the rest of the Bible Student groups, and 2) find a clever way to explain away what the 'Witness' of Jehovah was, since the name previously had been applied only to the Great Pyramid, one of Russell's beliefs which Rutherford rejected (at least he was correct to ditch the Pyramid crazies).