I noticed that too. I think the writer was trying to avoid the ridiculousness of “potentially pregnant people” and still abide by the laws of woke linguistics. *eyeroll*
If you look at the Statista data, it does not appear that they are breaking it down by gender. Interestingly, they place diaphragm and condom in the same cohort.
That tells me they are asking men if they take birth control pills, and that would indicate that up to 30 percent of women, who are sexually active, and using methods of contraception, take the pill.