The Org expands it's area of authority by slipping these comments into CO remarks, convention lectures and other "back channel" communication with the little people. This gives them the desired control without having to go on the official printed record where it can be challenged for Biblical backing. It is almost always the tactic used when trying to fine tune the rank and file to conform to the personal opinions of the Governing Body. In the case of Facebook, it is just another example of the Watchtower internet paranoia.
This is an odious cult.