That definitely has occurred to me! I would even broaden it to say that I (or my company or my industry) might be subconsciously undervaluing lots of candidates

That definitely has occurred to me! I would even broaden it to say that I (or my company or my industry) might be subconsciously undervaluing lots of candidates that don't fit the white (or asian) male nerd stereotype. That being said, I think the undersupply of programmers is so severe that even if this subconscious bias was corrected it wouldn't increase the supply of people enough that it would necessitate "hiring less men as a result."