I don't understand this line. Are you saying Google doesn't tell you the sex or you are not interested in looking it up?
I was curious since everybody claims what others say as anecdotal and dismiss each others arguments to suit their points. So the information as to who visit this site can tell lot about gaming habits of the sexes.
Anyway it doesn't matter
We have enough data through various sources to correlate that women by and large simply do not perceive games in the same way as men, and are not as dedicated to the medium in general. There's no reason why saying it should be taboo, and there is nothing negative about it in and of itself.
For instance, if we were to compile how many people pre-ordered a PS4 on Amazon when it launched last year or who lined-up at Best Buy to get Diablo 3 when it was released, I have no doubt we would find an overwhelming majority of men. There are people however who have that data, and these are the EAs and Ubisofts of this world. They know that the ones who overwhelmingly purchase their products are men, and thus the market by and large caters to their interests. Efforts to cater to female gamers have sometimes been met with success and carved niches, but it remains the exception rather than the norm.
Although environmental and cultural influences are a real factors, and individuals are multifaceted and complex to define, in the same vein, people simply aren't "blank slates" which are entirely shaped by such external influences, and entirely at their mercy, since science proves there are deep, often implacable differences between the sexes, which show up at the earliest ages often even when they are toddlers. Think about it: the aim is to give women confidence in themselves and make them believe that they can aspire to great things, but in the same vein, the underlying message given to them is that shadowy forces practically doom them to failure, which contradicts the initial premise.
Another example of this is spatial navigation and geometry, which men are consistently shown to be better at than women. This is why men are in general known to be better at navigating an unknown environment, and it might also explain in part the relatively low interest most women have toward FPS, who might find such an abstract perspective confusing. But these things certainly do not always go in the same way, for instance women have been shown to be superior at certain abilities than men, when it comes to language skills and socialization for instance.
As far as I'm concerned this is definitely not about discouraging anyone to have the hobbies they want to have. If anything I'm sure many of us men on this forum can relate to a feeling of stigma. We know that were we to be open about our hobbies to our extended social circles, it would be frowned upon, and seen to some extent as an immature and futile endeavor. Most women gamers might be made to feel like outcasts by their environments, but the truth is that we are often made to feel like outcasts ourselves, and as such we relate to that feeling. However, we should not try to deny that some profound differences between the sexes really do exist, and that they in fact are part of what makes us unique, and complementary.