I would definitely recommend to anyone who skis not only to buy the equipment, but also to practice with it often and visit some a freeride school where they can teach you at least the basics.
Thank you for posting this video.
The fact that the victim was able to move his pole was pure luck. If he wouldn't have done it, his survival chances would be very low. According to statistics, about 93% of victims rescued within 15 minutes survive. After 20 minutes it is just 30%. Imagine looking for a victim without a beacon, plus add some time for digging.