It is a fair question. That leads again to the question what is a black belt? Or even, what is a martial art?
To me martial art implies application in some sort of ‘war’, thus opposition is needed (or is it a tango?
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).
Black belt, to my eyes, is someone with some ‘war’ skill, someone that understand enough to progress on his own. To hit (or grab, whatever is your speciality) a live opponent is still a basic move to me (in martial arts). I did not say a hell of a well trained fit opponent!
But... who am I to set standards?