Parents don't see their young girls as wanting to pursue computer science
and don't steer them in that direction.
Which is it? I get the feeling it's that girls just aren't that interested. People like to point out that more girls were interested in the 80s but that was a very different era. Few people actually knew what was involved with "programming computers".
All of this effort reminds me of a similar misunderstanding that I came across years ago. In the 50s Lionel decided that girls didn't play with trains because they weren't "girly" enough. They were black and steel and perhaps too boyish. So the genius marketers came up with this:
Should you wish to see one in person go to Holiday World and check out the old toy museum.
It flopped badly. The reason was simple: girls generally don't like trains, but those who do want an authentic train. Black, steel, menacing - a real train.
Every time I see people trying hard to make computer science appeal to girls I see the same thing. It simply doesn't appeal to most girls, and to those to whom it does appeal it will have that appeal without any sugar coating.
Ultimately, the SJW crowd needs to understand that men and women - and boys and girls - are very different creatures who aren't interested in the same sorts of things. The roots of this are genetic and stem from the social order tens of thousands of years ago. Nothing's going to "fix" it, but, then again, there's nothing to fix.