The title implies that the data was manipulated. What happened was column headers were renamed without an official entry in the changelog.
Most of these changes were the column heading “Gender” renamed to “Sex.”
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I feel it is one of the unfortunate consequences of "sex" being a noun and a verb, as well as a somewhat prudish desinclination to asking "has external genitalia" and use "gender" instead that lead us to the logomachy we have today.
(Of course the label should not have been gender or sex in either case because all one can determine at birth is whether they see a penis or not, and for less than 1% of humans that's not sufficient to determine their genetic makeup)