It matters to you but not to me. Let me first tell you miss Kitty that I respect your preferences and in our session I would not force you to engage in special services you are uncomfortable (licking hairy balls or insisting you put your tongue up my ass, etc).
I am clean and trimmed but shaving my nuts to appease an SP is the definition of insecurity. If my gf expresses a preference, I'd let her shave them.
Were are not that different and share a similar aversion, if you had hairy balls , I wouldn't lick them either.