The comment about only two pupils in S4 self-identifying as female is bizarre.
In DD’s school, they seem to understand the debates around self-identifying - one does not identify as female, one is female, at least as far as I can understand from a distance, and one makes a decision to identify as something else, one does not become it.
So they would know that half the school population is female. I simply do not believe that most girls in the class do not realise this.
And if only two girls in the class believe they are female or identify as female, then there is something odd going on. Would you not be asking why so many young women disavow the biological body, and social, economic and cultural baggage that comes with it, that they have been born with? It is not about saying young women must present or behave like x,y or z.
I wonder if the point is that young women identify first and foremost as people and do not see (yet) gender discrimination hence they do not identify as female - and that is where the author is trying to go.
But that is almost like saying I do not identify as female therefore gender discrimination does not exist. Rather than I am female and I should not be treated differently because I am female. Which is what young people may think equality is, rather than recognising that female people have specific needs and protections which have been fought for and need retaining (which should not be a reason for discrimination either).
That probably does not make much sense either, and I agree that the root of the problem is mixing up sex and gender.