If that's the social cue to make tech okay for a large majority of girls, what's the harm. Most people seem to want to be male or female.
The more options the better, I think. We need to increase the amount of women in tech.
How about truck drivers? Do we need to increase the amount of women there too?
FWIW, truck driving (at least long-haul) is a little different from programming in one important regard: it takes the driver away from their families for days at a time. This is typically more problematic for women than for men, since women are still more likely to be responsible for care of home and family, whether they want to or not. (IMO that's another issue our society needs to address w.r.t. gender equality, but it's a bit tangential to the current topic of discussion.)
By contrast, programming jobs are no more gender-loaded in terms of the lifestyle involved than law jobs are. There's no reason for women to self-select out of them aside from being told that programming isn't for them or being made to feel unwanted.
Why isn't there a big push to get women into US agriculture like there is for US tech? Where is the government creating "farming" classes in school like they have done with coding?
But just because another industry isn't working on their problem doesn't mean we shouldn't work on ours.