I always thought the younger generations had less patience than us old timers....
When a buddy of mine asked if I wanted to try the Mice & Mystics board game, I agreed. But instead of learning and teaching the rules, he had us sit in front of his laptop and watch the video the gamemaker's company made to teach the game. A 3rd of the way through I was ready to claw my eyes out. "Why couldn't you read the rules and briefly explain them before we play, like we normally do?" "This is more thorough." I'll say it was.
That said, this isn't a bad idea. As long as they expect the GM (or player) to watch it on his own time, rather than everyone gathered around the screen.