>I refer to them as "women", never as "ladies" or "girls" or other nonsense.
Should we discriminate against people who come from a minority dialect where this is less common?
>I don't engage in, or tolerate, any sexist ... conversations.
Yes you do. Your comment to which I am replying advocates for sexism.
>Incidentally I regularly break some of these rules with male employees, such as remarking on haircuts ("looking good", etc.), but it's different.
Congratulations, you are now excluding women from a class of social interactions that you have with men. This means that it will be harder for them to develop the type of interpersonal relationships with you that help them advance in the workplace. This is the exact same problem as not taking women out to lunch (for fear of accusastion of harrasment), just to a lesser degree.
Maybe the benifits of these policies are worth it, maybe not. However, it is far from simple. Especially if you have truly bought into the notion that any form of sexism is wrong, because the standards of conduct expected of you (or, at least, as you are describing them) are still inherently sexist.
Further, I think this type of comment does another disservice. It makes it sound like the types of harrasment we are talking about are just normal interactions where one side happens to be a women. However, when you look at the actual instances it is almost always the case that the behaviour is unambigously bad, and would still be so regardless of the genders. Seeing comments like yours generates alot of pushback from people who read it and then misunderstand what the original problem that we are talking about is.