If I understand the early trinity debate (3rd century?), the primary purpose of this was to clarify that Jesus was not just a mere man who happened to get crucified and then was resurrected. The Athanasians wanted to in effect deify the Christ so that nobody could degrade him into just the latest prophet - sort of a succesion to John the Baptist.
This, I think, is why the witness theologians hated the Trinity so much. They do not want anything to stand in the way of their curious affection for the warlike and jealous Jehovah. While giving Jesus Christ lip service, they are probably the least respectful of the deified christ concept of any nominally christian church.
For crying out loud, they think that their 144,000 are practically on a par with the christ!
I think that the hunting down of various pagan references is just a support to prop up their rejection of the doctrine. That, of course, and their unique hatred of the Catholic Church.