I know this line of thought well, having read (the late) Dave Hunt's Berean Call newsletters for many years, and agree with parts 1 - 3 entirely. Hunt and T. A. McMahon did painstaking documentation to prove what these parts address in a cursory fashion.
But where the whole thing falls flat for me is in part 4. Suddenly David Drew is God's 'mouthpiece' of the hour: "This message to you (David) must be a message shared with others who bear Our name, who will in turn share it with others."
>Yawn<
"For there is one God, and one mediator between God and men, the man Christ Jesus" (1 Timothy 2:5).
I'll stick with the risen Messiah.
Anyone with even a modicum of spiritual maturity (like Zac Poonen, for instance) does not need to tell his audience that God is speaking through him and therefore he should be heeded. Good fruit is self-evident.