I agree with your final point, but to be honest in my personal experience, I've only encountered one case of sexism in my career, and the man in question was frowned upon pretty universally for his remarks. All in all, I've seen women treated with the same amount of respect respect (and generally more kindness and less petty rivalry) then their male counterparts.
A lot of the stories I read about sexism in the tech industry seem to complain about problems that aren't really there (most recently, a parent complaining that teachers should enforce positive discrimination for females in computer science classes to attract a more balanced gender palette).
I agree that it would be nice to attract more female coworkers to the programming craft, much like it would probably be nice to attract more male nurses into healthcare.
But I'm rather annoyed at the "big deal" people seem to be making of this (as far as I've experienced) mostly imaginary gender discrimination problem in our field. It could be that this problem is geologically clustered (I don't live in the US), and the problem is really much bigger in other parts of the world, but from where I'm standing, women don't have it worse than men in my profession.