I'm generally a big definitions guy, and think that many disagreements on some controversial issues are fairly useless without defining the terms -- especially those that provoke an emotional reaction and have a heavily negative connotation. But I did not really want to wade into a debate about the definition of "sexism," so instead focused on certain applications of that term that I felt would be widely accepted -- that not only treat women differently, but place women as subservient to men, or at least drastically limit the variation of personalities and roles as compared to men. Even if you limit the definition of "sexism" to only include that which discriminates against one sex, then everything in my article should fit. In hindsight, perhaps that's something I should have mentioned in the intro.