The Org is moving quickly to show beards on brothers and to normalise it as quickly as possible. Look how quick members of the GB were to adopt them.
I believe this is because it is one of the long-standing policies that the NEW GB realise was always completely stupid, and so they want to distance themselves from it as soon as possible, stop the discussions about it and move to a time when it APPEARS that it has always been so, ASAP.
They probably believe it's one of those low-stakes, "quick win" changes that can help to make the 21st C Org look more "normal", for minimal effort.