@spendius,
I want to preface what I'm about to say by acknowledging that it is often the case that people in this day and age, at least from my experience, are very against generalizing whole cultures, religions, or genders. But, this seems to be a bias in and of itself - people cry bigot or discrimination whenever someone claims that something is unequal, even if there is sufficient evidence for said claim. Some generalizations of whole cultures, religions and genders, contrary to popular belief, are true.
That said, it is very easy to overgeneralize, and that, from a philosophical perspective, is a formal fallacy. And in this case, I don't know of any evidence that supports the position that women are inherently less capable of philosophizing than men. What is your evidence for this? If your claim is simply supported by the historicity of human culture, you're being obtuse and ignorant. Women were not considered equal on any level, especially intellectually, in the past, and that is why they were often shunned from conversations of substance -
not because they didn't have the capacity to contribute. Women were forced to retire when the cigars came out not because they were out of their league intellectually, but because rich, white men are often sexist pricks.