Re: This needs to stop
Prior to the 70s, yes, there was discrimination, and largely a lack of extensive education in fields that led to some roles.
With the social changes accelerating in the 80s and beyond, this attitude has changed. These days, anyone can apply for anything, and that's entirely as it should be in my books.
What you'll find though is that women are over-represented in the biological sciences, which are just as technical (and often more so) than computing. And they do extremely well there, along with having it as a preferred path.
Where the paradox comes in is that people are perfectly happy with over-representations of women in other fields, yet still believe that there should be 50% in a cherry picked field available after a large cohort of women have chosen to engage with a different technical field.
It's like saying you have 100 men, and 100 women. 70 women have chosen to go into biological sciences, 20 into physics, chemistry and maths, and 10 into computing.
Then the men have gone 60 into computing 30 into physics, chemistry and maths, and 20 in biological sciences.
And at that point you have a group that says "We're glad that 70 women are in biological sciences. But there should be 60 women in computing now, as there are 100 men, and 100 women, so there should be demographically equal representation. You're all so sexist!".
It gets very tiring explaining that there aren't, at this point, and extra 50 women to go into computing because they following other (often just as technical) roles.
To top it off, the people yelling about how sexist people are because there aren't those 50 extra women are now saying that there's a problem, and women should be pushed into that field earlier, even if they're not interested in it.
If you want to do a job, just get out there and do it. That's how the Western World is operating these days. It irritates me no end that people with little to no experience in the availability of resource are yelling the most about how wrong it is, and they do that with "maybe this", "perhaps that", which are completely debunked assertions at scale (there are always outliers, which are always the ones trundled out to try and prove the rule).
Your own anecdotes about women being in all those services are evidence that women who choose to be in those services and roles, and can pass the necessary requirements, can follow them.