it's not quite sawing off the same branch you're sitting on to the same degree
I hear what you're saying. On paper, this is a coup, an epic power play. In reality, though, the coup exists on paper only. The bulk of the "anointed" never had any real power. The privileges they enjoyed were having witnesses at the local level view them with a special reverence.
It's not as if non-GB anointed are going to form their own splinter groups and take rank-and-file witnesses with them.