I had looked thru this actually.
My impression is that the only thing it MAY be good for is if you want to work as a personal trainer in a private healthclub. I think there are a couple of agencies that offer recognized certification as a personal trainer, and the healthclubs typically require this kind of certification for employment.
Is this agency one of the accepted ones? That, I do not know. But to my knowledge, there is no law requiring it as professional requirement, in the same way that you need to have a bar membership to practice law, or pass the medical boards to practice medicine. I believe it is just an industry norm that the healthclubs tend to go along with.
I do find it a flawed logic, however, to suggest that I need some other agency to give me the nod to be a martial arts instructor. If my sifu says I'm clear to be a teacher, that is good enough for me.
If I want to work in a health club, I would probably need to play the game and get certification as a personal trainer. But I don't think I would need to get this particular certification, with emphasis on martial arts. I expect ANY recognized certification would be good enough, and the fact that I focus on training my clients in martial arts is simply my choice.
My concern with such a MA-specific program is that they may attempt to push training methods that just don't make sense with your particular art. I don't think you can have a generalized course like this and expect it to be equally relevant to all martial arts. In fact, it may not be relevant at all.