Picks135,
The video is of testing to confirm whether all those calculations and measurements had been correct.
All the wind measurements on and above decks for turbulence flows, along with rate of change of deck angles and movement measurements is great. As is modelling and computery whizzery. Unfortunately it gets to a stage where some one actually has to go and try it.
Then pilots, aircrew, and ships crew all have to practice it. No point just doing it when a war breaks out, or someone needs rescuing. You will fail. It must be practiced to maintain competency.