Most people don't think women are incapable. In fact, they think women are far more capable and autonomous than the average commenter gives them credit for. That's why they willingly choose not to go into IT-related fields or tend to pick things adjacent to it, despite all of the things being done to pull them in. Let alone the fact many are willingly selling their bodies both as eye candy and physically, often without a mediator in between, despite a more stable and on average more lucrative job available to them. At the very least, many of them realized back then sleeping at your office working for peanuts to work on your dream project under supervision of some corporate bigwig wasn't nearly as great as whatever their other options were back in the day.
And god forbid we point out the elephant in the room: most people, women or men, aren't looking forward to working in an industry consisting primarily of the other sex. You take any profession and it will be an uphill battle starting from the cradle all the way to the grave. People acting surprised this hasn't changed immensely in 30 years are underselling the difficulty of solving the problem given all the other options available to any individual person today.