Technology is by no means the only work area that's very out of kilter in terms of gender distribution. Technology is just a very well paying and fairly prominent industry, so it's talked about a lot more then say truck driving.
Lets concentrate purely on gender imbalanced groups. Any gathering of humans where the sexes are not proximately 50/50 or 60/40 but 90/10 or even more extreme.
I think we can all agree that this is neither natural nor healthy.
But, once a population goes out of what like that, the imbalance can work to maintain intself. It's an interesting group dynamic, but I've heard male nurses complain much like I've heard female programmers complain.
That's why I think that a 90/10 or worse split is obviously not a good thing, for almost any human endeavor. Some exceptions certainly apply, like monasteries.
And I think a 90/10 or worse split can become self maintaining.
But I'm not sure there's a practical solution for this. No amount of encouragement or gentle prodding will fix this.