I disagree. Asanas as traditionally practiced in Raja Yoga are only one out of eight steps of the Raja Yoga path to Samadhi or full experiencing of the Brahman nature of reality. Asanas as isolated in Western practices can actually lead to spiritual bypassing and the movement of emotional and energetic rigidity from the physical to the energetic body, making clearing and unblocking that much harder as the rigidity is no longer accessible through the body itself. In addition, the movement into advanced asanas can easily turn into spiritual materialism, enhancing the ego and actually preventing spiritual growth through the pleasure of progression and the ability to do said "advanced" asanas.
Asanas, or yoga as you speak of, is primarily a spiritual practice. The music and editing of the video certainly portray a peaceful existence of those filmed, but the ability to do advanced maneuvers in no way should be seen as "what yoga is all about".
If you're interested in what yoga as spoken of in the West, or rather asanas, are really about and where they fit into the Raja Yoga path, check this link out:
http://www.expressionsofspirit.com/yoga/eight-limbs.htm Asanas are only one step in the path of eight limbs. Taken out of context it can and is dangerous.