And fundamentally, if we can no longer use the word woman to mean adult human female, we no longer have the language to describe sex-based oppression. And we cannot fight sex-based oppression if we don't have the words to articulate it.
Laws are being made which conflate sex and gender, starting with the Gender Recognition Act:
Where a full gender recognition certificate is issued to a person, the person’s gender becomes for all purposes the acquired gender (so that, if the acquired gender is the male gender, the person’s sex becomes that of a man and, if it is the female gender, the person’s sex becomes that of a woman).
This has been interpreted to mean:
As the Gender Recognition Act states that one’s acquired gender becomes one’s legal sex then there is little difference between sex and gender. Indeed sex is preceded and exceeded by gender by the terms of the Gender Recognition Act. Sex in this sense is determined by gender identity – the social role that one chooses to take.
www.socresonline.org.uk/12/1/whittle.html
So the law, according to some people, is saying that 'sex' doesn't exist but 'gender' is real. These are the people who are shaping the law. Stephen Whittle, who wrote the paragraph above, was one of the authors of the Yogyakarta Principles, elements of which were included in Resolution 2048 of the Council of Europe. These are the documents being used by the government to decide the way forward on changes to the GRA. They were mentioned in the Scottish GRA consultation, and also by Maria Miller.
This would mean that 'woman' is someone who feels like a woman, not someone with female biology, since 'gender' is reality, and 'sex' means nothing. I'm not sure that the politicians really understand this, but the people behind it certainly do.