If we're talking about strictly gender diversity, that's speculation. If we're talking about a diversity of past programming experiences, then you're correct. But you were definitely arguing that women can bring something to a project simply by their virtue of being women.
> You seem to be reading into it quite differently than I meant it.
I don't think so.
You're saying that men and women think so differently about programming that an all-women team can never be as good as the those-same-women-plus-one-man team.
I think you mean well, but what you're saying is damaging. And unproven.
You suggest that, at least regarding programming, there's man-type thinking and woman-type thinking. If that were true, there'd be an identifiable difference between programs written by men and women.
Gender diversity in a profession is desirable not because people have special gender-specific knowledge to bring to the table, but because they should just be able to be at the table, period.