Ok so I went and looked at half a dozen other dancing horse videos on youtube and found out a bit more. While I still don't agree that the horse in this video is calm and happy about doing its job...he does seem to be the exception to the rule. I would guess that the horses are supposed to look fast and dramatic about the dancing. There is one really nice video on youtube that has a white horse doing the dance and it is quite beautiful. I never claimed abuse...I just didn't think that horse particularly cared for his job. The white horse, on the other hand, seems proud to do it. Needed very little coaxing to start and actually looked like he was dancing. Inbetween dances, you can see his handlers petting and loving on him.
I am no judge of this type of talent but I would rather watch the white horse dance than the scramble legged horse in the other video
Edit to state: With the 'abuse' mindset, we can find abuse in every single thing we do with horses. This Attan is new to me...I had never seen it before. Which to me, makes it unfamilar...but not abuse. Think of every single thing you do with a horse and it can be classified by SOMEONE as abuse.