Of course is arbitrary! 
It's based on subjetivity and it's handled by humans. Misunderstandings, conspiracy theories and mistakes are bound to happen. However I do believe CVs already select DDs with care, at least on my end, I never make a decision right away and it's never because "Oh! this is nice, I'll feature it" and period, I take many aspects into account and I always do some research before featuring. And with the amount of suggestions I receive certainly I'll NEVER SAY "I have nothing better to feature today, so have this"
I get not all people perceive it that way though, but unfortunately I can't change anyone's mind if they're convinced of the contrary.
It's based on subjetivity and it's handled by humans. Misunderstandings, conspiracy theories and mistakes are bound to happen. However I do believe CVs already select DDs with care, at least on my end, I never make a decision right away and it's never because "Oh! this is nice, I'll feature it" and period, I take many aspects into account and I always do some research before featuring. And with the amount of suggestions I receive certainly I'll NEVER SAY "I have nothing better to feature today, so have this" I get not all people perceive it that way though, but unfortunately I can't change anyone's mind if they're convinced of the contrary.