I'm not shocked, but I am a little disappointed that the discussion here completely missed the main point, which was that maybe all these "women in tech" pushes are fundamentally flawed because they don't actually focus on the women in tech and the careers they've built. Instead the focus seems to be on "look at ms cutie teenager coding!" rather than "look at Ms. Senior Developer working on these interesting projects", and it's detrimental.
That actually makes a lot of sense to me. People need to be able to picture the future of something, an end result. A teenage girl isn't going to really be able to picture herself as a coding wunderkind unless she already is, and if all the images of adults in interesting STEM positions are white dudes, she's going to have a harder time imagining "hey, I could learn this, and then one day be doing job X!" And I think it's important that all this happens at a really subtle level, so it develops a series of expectations that are very hard to counter.
And it's something that's easily applicable outside the specific topic of women and IT jobs. If you want to motivate someone to volunteer, you don't tell them about George The Super Volunteer who single handedly saved orphans, you tell them that you need people to help sort canned goods in order to get food to hungry families. Specific action, specific outcome, both framed in such a way that the person can easily envision themselves in that role. People need to imagine not only how they could do something, but what it would achieve.
If I were trying to get boys to consider careers in nursing, I wouldn't just talk about boys who like biology, I'd talk about men whose nursing careers were successful and rewarding.