I’ve introduced a friend to mtb in the last year or so and she is over the moon with the interesting and 4D characters, male and female, she has met and cycled with. If women are put off by certain male attitudes, it’s because they’re pr*cks not because they’re mtbers.
I think a problem with mtb is, like surfing (another male dominated sport), there’s a fairly high entry point of basic competence and fitness. After that, the endorphin rush and shared pleasures are such that you’re likely to like everyone! I feel completely privileged by having cycled with a certain bunch of women in Derbyshire a fortnight ago, long may it continue and more like that please!