Actually, with the air blowing down on what amounts to a BAFFLE, there isn't much about Bernoulli or Newton demonstrated in that video.

What it proves is that you can keep a helicopter from lifting off by harnessing the downblast with a big sheet of foam board.

The lift that was created either by Bernoulli or Newton was cancelled out by the force on the board. Cut the board down a bit at a time and what will happen? At some point the lift from the blades will be greater than the downforce on the board and the sucker will barely lift. What does that prove? You've gotten just beyond the balance of two forces. One created by the blades and the other by the blast.