Natural blondes are rare and so the sight of a blonde bush has it's novelty. Long time since I saw one.
People who shave their crotches always have to loudly claim their reasons in order fish for approval, irrelevant of the topic. As for the blonde pubes, I've seen them in porn a few times and dated a blonde who had the golden/almost platinum going on down below with zero browns. The eyebrows-to-pubes claim I always remember hearing in junior high where we'd look around the room at girls to guess their bush color. In some cases I found that not to be absolutely 100% true, but almost.
...edit...forgot I already responded to this topic a long time ago. Somehow got bumped up again quite a bit.