Actually, "Maybe it's the women who are stereotyping us." is a very valid option to raise.Before you can increase female inclusion you have to find out why they're not already playing. If you are not willing to explore any potential reason (regardless of how it may challange your preconceived notions of what the problem is), your claim to be serious about increasing female participation is ultimately a sham.
Okay, that's a point, so let's explore that. Let's assume there is a group of women who would like to play X-wing and for some reason have decided against it. Let's assume also that this is due to their preconceived notions of what the male players are like; be it sexist, misogynist, aggressive, et cetera.
So in your view, what would a solution to this look like? Calling them out won't help. Returning fire is, ultimately I think, only going to prove them right in the manner of some horrible self-fulfilling prophecy. But engaging positively and demonstrating that the X-Wing community is none of those things? Now we're getting somewhere.
your claim to be serious about [...] is ultimately a sham.
Mate, was that really necessary?