It's a bit like asking why there isn't a Straight Pride Month, really. Men in science haven't really been categorically underrepresented/excluded from science the way women ever have.
Representation is irrelevant, it has 0 value, and it is a silly game anyway, because you can just pick another arbitrary category. For example: blonde people are underrepresented, and so on. Is it interesting? No. Is it relevant? Not really.
Women and blacks are not "systemically discriminated against through laws" in most countries. I will emphasize that US and UK are not the countries in which they are.
And as to broad cultural values: I should have brought up gingers then, because I am sure you can agree to it that they are. Plus, you really cannot claim anything about the relevant people's cultural values and if they really have been a major influence on the decision of putting people in the footnotes, and that it was due to this people's biological sex. Why do you so want it to be the case? Why cannot it be something else, like something related to the contribution itself? That would definitely make more sense and would be more likely than some random, arbitrary attribute.
>Women and blacks are not "systemically discriminated against through laws" in most countries. I will emphasize that US and UK are not the countries in which they are.
>A 2017 study by Federal Reserve Bank of Chicago economists found that the practice of redlining—the practice whereby banks discriminated against the inhabitants of certain neighborhoods—had a persistent adverse impact on the neighborhoods, with redlining affecting homeownership rates, home values and credit scores in 2010.
>According to U.S. Sentencing Commission figures, no class of drug is as racially skewed as crack in terms of numbers of offenses. According to the commission, 79 percent of 5,669 sentenced crack offenders in 2009 were black, versus 10 percent who were white and 10 percent who were Hispanic. The figures for the 6,020 powder cocaine cases are far less skewed: 17 percent of these offenders were white, 28 percent were black, and 53 percent were Hispanic. Combined with a 115-month average imprisonment for crack offenses versus an average of 87 months for cocaine offenses, this makes for more African-Americans spending more time in the prison system.
>Blacks were more than twice as likely as whites to be searched after traffic stops, even though they proved to be 26 percent less likely to be in possession of illegal drugs or weapons.
>The results show significant discrimination against African-American names: White names receive 50 percent more callbacks for interviews. We also find that race affects the benefits of a better resume. For White names, a higher quality resume elicits 30 percent more callbacks whereas for African Americans, it elicits a far smaller increase.