Where are you people getting your info from? No one on the GB is "non-anointed." Not all of the Nethinim were of the "other sheep".
I have no doubt that some of these men realized as they were climbing the Watchtower ladder, that the only way to make it to the top rung was to be of the 'anointed' class. So, what do you do, you start quietly partaking of the emblems, with as little fanfare as possible. If it works, well then you keep on partaking as you are promoted to CO, DO, etc.
I am sure all these new GB members have been partaking for at least a couple decades, and apparently it has paid off.
No Apologies