The pseudo-scientific guff in this paragraph:

"Today, we pride ourselves on letting children defy antiquated gender stereotypes. Boys can now have dolls, and girls Erector sets; we agree that the salient differences between genders are social constructs, and give little leeway to those who insinuate that, say, women have less aptitude for science and engineering. Yet, even as many fight against the persistence of rigid gender norms, we still separate the sexes as soon as kids are old enough to be potty-trained; when gym class arrives and locker rooms are needed, we push the boys and girls even farther apart. For all the progress that has followed from the enlightened credo that gender is but a construct, we keep hesitating at the notion that sex, too, does not obey strict binaries. Some people aren’t just pushing away from prototypes of sinewy maleness or delicate femaleness; they were born with bodies that don’t conform to the “M” or the “F” boxes on the census form. There are children, in other words, whose genes have not defined for them which bathroom to use, or where to change for gym class; babies can be born with XX chromosomes in certain cells, and XY chromosomes in others—mosaic genetics."

Science has proven time and again that there are fundamental differences in brain structure/chemistry that differentiates the sexes, as there are physical differences that differentiate the sexes. In fact, this fact is spurring new thinking on trans-sexual people along the lines of either their brains or their body developed in the wrong way whilst in their mothers womb.

Science had proven time and again that males and females have differed aptitudes/affinities and are naturally drawn to certain jobs and sectors of society. The differences are not huge, but they are there. There are also exceptions, but they in no way disprove the fact that the sexes are different.

Males are better at warfare, science, technology/IT, advanced medicine (Surgeons, consultants) and education (High school/collage/university lecturers and teachers etc), engineering and other technical and physical jobs, whilst women tend to be better at jobs that require 'emotional intelligence', the ability to empathise (which men lack) etc.

The only gray areas are early education and medicine.

But this difference in the sexes is not wrong, or something that needs to be corrected. Men and women are two parts of a complimentary whole.

Intersex people are just people who were screwed over by fate and biology and should be given a 'gender' on the cirtificate if it helps them.

Trans people should also not be ridiculed and shunned for something they have no control over.

This should be obvious. They should not need to use pseudo-science in an attempt to reinforce their point.