That said, more men have grown up playing video games than women, since games are mostly catered to man and in a lot of places are still seen as a boy's thing.
There is no evidence of that, please show proof, remember that before the crash game where gender neutral, Ads reflected that.
count the girls
This is the 90, this is post crash, now look at pre crash ads
The other things is that when girl play video games they consider it an activity like another, not a core identity, so even if they never really left gaming, they didn't identify nor socialize as such, until it grew up on her and finally reclaim it in their 30 (now), which is the process of maturing.
I know a girl who don't identify as a gamer and she is more hardcore than me on arcade, when she learned that I worked in the industry she got in touch with me to get a r360 arcade (I think she use the real serial name of the machine) thingy I don't really know about.