Discount Lesbians: Averted.  While the Worlds include monogendered species in which the monogender happens to be female (happens a lot, since, y’know, the functional definition of female is usually the same as that for reproducer), and also include trivial sex-switching, gender-rewriting, and sexuality-adjusting technology, there are also an arbitrarily large number of “regular” gay women.  The existence of the former doesn’t delete the latter.