The 'content warning' is for the use of 'woman' here:
"We’ve all been told (probably numerous times) that our worst period problems — cramps, PMS, super heavy flow, blood clots, migraines, teenagelike acne, bloating, and exhaustion — are completely normal. Yup, just part of this whole “being a woman” thing."
Because that's not part of 'being a woman' at all it's just some mysterious thing that randomly happens to people of indeterminate gender.