My friend, it has nothing to do with whiteknighting, it is about treating these girls with respect.
Paying shit loads of money does not make you the master and the girl a slave.
With that kind of attitude of yours, I bet you get lousy service quite often, do you.
A SP does not have Clark Kent's X-Ray vision. She is unable to tell whether your down there was shaved clean before she lets you in the door. The only way for the girl to find out is after you undress yourself. Again, imagine yourself in the girl's place. It is not an easy situation for her to tell you "Oh... your down there is hairy, I can't service you, now get out." If she does that, it means she probably has to send away half of the clients out the door. Therefore, of course she'd try to please you as much as she can.

She is just asking you to shave yourself clean so it makes it easier for her.
Come to think of it... how hard is it for you to shave your balls anyway?