I think is a self slapping halal dance for sin atonement.
I used to do dance choreography, including breakdancing breakins, locking and popping and I do not include repeated left right with same action in my choreographs which most dance choreograper do. Same like acting I don't recommend mime acting which many sinkies professional producers make. I find it stupid.
I like this halal slapping dance as it does not fall into the repeated left right moves.
Pass my assessment.