Even what little muscle fiction there seems to be on-line is adult in nature. The whole thing has gone (or perhaps started out as) XXX, and in a major way. The actual sport of competition itself can sometimes feel like a by-product. This thing (female bb) is very unpopular among most people, and in a lot of the circles where it is popular it has become oh, I don't know......corrupted? Or perhaps it is flourishing, but in a bad way.
Schmoe's angle on the theme, despite being warts n all, is to acknowledge but not promote the gratuitous exploitation side of things (it ain't the women being exploited by the way; I'll leave it up to you to work out who is). BIG CHEST touched upon this concept in EXPO.