I would say from my observations as a Penguin who has worked in both male and female dominated professions, once a working group becomes dominated by females, the communication strategies operating between employees change in a way that becomes more than a little frustrating for some men. I think your answer is correct, but your reasoning has not fully explored every permutation of why something might be. You've correctly identified why women might not feel welcome in a male dominated workplace, you have failed to explore the opposite problem and instead laid this squarely at the feet of those pesky men and their patriarchal brains. :o)