The GB and their minders put these little tidbits in the publications as a way of numbing the minds of the flock. The change to the GB is the "faithful slave" was years in the making.This idea was being put forth among the GB themselves when Dan Sydlik was alive, he opposed it. I don't know if he eventually caved in or not. I do remember him being aggravated because some of the GB told him he was standing in the way of a "benevolent dictatorship."
Slowly, slowly, the writers weaved various sayings into things so it comes as no surprise when the bombshell hits. Hence some will say "Oh, we've always believed that."