No. They meant to stop him from his compulsive interest in electronics. They wanted him to play with other kids, play sports, run around. He seemed weird and they thought he would seem weird when he grew up. And running shop that fixes radios didn't look like success to them. (Until recently, "nerd" was a very offensive insult.)
> (Until recently, "nerd" was a very offensive insult.)
In that sense, perhaps society has made a little progress, in socially embracing those that seem eccentric, quirky or uncomfortable - maybe not always for the right reasons, but it allows more people to be themselves and be happy.
I think it's less of actual progress, and more of economy: what was considered nerdy two decades ago, now is the easiest path to both upper-class and 1%-levels of wealth. People don't hate nerds anymore, they want to be them - not because the topics are interesting, but because they're a good career.
There's certainly some of that, but the long tail of the Internet means there are all sorts of communities and real-life meet ups of the strangest obsessions where their interests are celebrated, not made fun of. This means it's safe to declare your weird obsessions. Even if you're family doesn't understand it, they don't have to - theres a community to connect with, whereas previously there was little/no such ability, and Nerd interests were shunned. Now they're the feature of Comic Con, SDCC, Pax, etc.
Rather, the connotations of the word "nerd" have lessened significantly. In the 60s and 70s, it was like what being called an "incel" is today. It was meant to mark you as unlikeable, unpleasant, unattractive, and pretty much outside of the realm of normal human consideration.
Very dubious that a electronics mini-wizard could not figure by himself that it's impossible to take down the electric city distribution system from your house.
I' vaguely remember confronting my father over a similar issue during my electrical experimental days as a kid, asking him why our house had no adequate protection (those days simple fuses where still normal).