I don't believe this fear involves "the truth." The fear is that a true thing (there are cognitive differences between men and women) will be used to bolster a lie (men and women should be excluded from varying industries based on reductive readings of physical generalizations). This is something that has happened repeatedly throughout history and along many dimensions; it's not an unfounded fear.

That you seem to think "something" should be done at all in response to this study only validates the fear.