Pixel nailed it. Everyone watch the screen. Remember "keep your eyes on the prize"? Now it's "keep your eyes on the screen"! It's the ultimate way to control the message, to ensure that everyone hears exactly the same thing in the same way. The organization has ALWAYS been about information control.
But I feel sorry for the audience (well, more than usual). Why? Watching someone talk on a screen, a pre-recorded video, is WAY more boring than a live person (even when that live person is pretty boring). A live person can often react to what is happening in the room. In particular, a good speaker makes eye contact, comments on ambient conditions, makes little jokes, and gives the impression that he is speaking right to you. The best talks were like that. But no more, apparently. Now you just have Big Brother hammering at you from the screen. Yuck.