The problem with believing that God especially picked them in 1918 as regular readers of this website know is that in 1918 they were still advocating prophecies about 1874 all of which had failed.
The two issues I never could make sense of were 1. Who appointed these men to the GB? Answer: their cronies; and 2. How did Jehovah/Jesus talk to them? Answer: He didn't. They discussed a topic and if they had a majority agreement they felt that HS was leading them to the right decision.
In other words, no different from a non-religious board of directors reaching a decision on what direction their business should go.