I am also aware that I am just one more adult voice competing for any child's attention, a noise among a chorus of people all with their opinions about what's important. Boys and girls alike question the immediate value of these subjects. They see them as work forced upon them by adults.
Like you, I have also noticed that the boys and girls of today, at least in middle class areas, often have touch-screen devices as their first device. Those are just game machines with tons of advertisements. I am sure those companies know that they are advertising to kids. The kids love the ads because viewing it means an in-game reward. But that's an aside. The main point is that these devices aren't an obvious portal to software or technical interest.
I have noticed that many schools have a small cadre of children who, by some combination of successful grooming by parents or personal inclination, do enjoy technical subjects and technical mastery. I think at some point, the social reinforcement by that small cadre of children overtakes the importance of parental grooming.