I can only speculate but what I think we are seeing here is a statement made in earnest by a corporate communication team, crafted with significant input from a product team. To admit that this was an intrusion would be severely career limiting. So they explain it in a hand-wavy fashion, enough to get the Comms people off their back. The end result is this unsatisfying explanation.

Just speculation. There has to be a method to the madness that is Facebook press releases.