I don't think that this video advances the discussion; it simply throws out random facts and offers no real answers.
For example, why do drivers drive, on the average, 3" closer to cyclists who wear helmets (I think I know the answer). How close do they drive to cyclists who don't wear helmets? And if a cyclist is hit by a passing car, who is more likely to sustain less life-threatening injuries, the helmeted rider or the non-helmeted rider?
These questions, and more, were left unanswered by the video.