Or look at the NBA, coal miners, oil rig workers, chess teams, math clubs, computer gaming tournaments, etc.

There are gender disparities all over the place. There are racial disparities all over the place.

As long as these disparities aren't enforced intentionally by sexist/racist laws, I fail to see what the problem is.

If truly there is discrimination against talented women in the tech industry, then another company would hire all of these underpaid talented women and take over the tech industry.

Why did Larry Page, Jerry Yang, Bill Gate, Zuckerburg, etc all hire mostly males in their startups? Because they wanted to overpay underqualified males because they were sexist against women?

The argument doesn't make sense. If they did that, then another startup would have taken those underpaid overqualified women and destroyed their competitors.