Healers expel a lot of their own energy and can do damage to themselves over time. This is another reason why keeping up with 8-section brocade and chi-kung are very important to avoid issues.
No. At times he's talking while doing it. While Chi-kung is breathing and moving, rotating your wrist like that really isn't the long slow type movements you would expect with chi-kung.
The above comment is assuming the video is even real.