Why is it wrong that occasionally manuals use a "she" to describe somebody? Is "she" an inherently wrong default position to take as opposed to "he"? Even if 4 out of 5 times it's a guy, why not suggest that perhaps it'll be a girl sometimes?
I personally use "they", because I'm a badass linguistic prescriptivist who's fine with using a neutral plural to indicate singular. But I don't see a problem with stopping the male singular from being the default. Language describes reality, but it also defines it; languages that assume maleness as a default suggest to its users that maleness is the superior form to take. I don't think it's a particularly devastating result of language, but I also don't think it's particularly annoying for women to ask that they not be diminished by the language. If it doesn't mean anything, why not just alternate it and not raise a fuss?
(I draw the line at stuff like "womyn", though, because that's when for me it becomes noticeably silly.)
I personally use "they", because I'm a badass linguistic prescriptivist who's fine with using a neutral plural to indicate singular. But I don't see a problem with stopping the male singular from being the default. Language describes reality, but it also defines it; languages that assume maleness as a default suggest to its users that maleness is the superior form to take. I don't think it's a particularly devastating result of language, but I also don't think it's particularly annoying for women to ask that they not be diminished by the language. If it doesn't mean anything, why not just alternate it and not raise a fuss?
(I draw the line at stuff like "womyn", though, because that's when for me it becomes noticeably silly.)