I captured this concept in my first book with a phrase I call "profound ignorance". It's not just admitting you're ignorant, it's admitting you're probably ignorant about everything. And that's fine. Ignorant people don't know yet, and if they're curious, they go try to find out. Even when they do find out, they're still quite open to being wrong. They are, in fact, ignorant.
I found this had a profound impact in my programming and consulting career. Frankly, it's bad for your career and good for your life. People want to hire people that know a bunch of stuff, and to be open, honest, and curious about being profoundly ignorant is not reassuring. Other programmers many times want to play posturing games. It is, after all, part of our social programming. Ignorant people usually don't do so well in these games. But on a personal level? It was liberating. I could find whatever I wanted to and deep dive in it. Since I didn't know much of anything, I was able to talk about topics I have a ton of experience in without feeling like I had to attack or defend any pre-held opinions. It was, in fact, what I consider "growing up", both as a human and as a professional.
When we think of how much programming is skewed towards youth, we should keep in mind that most really young people have not had this growing up experience. We should wish them well and cut them a bit of slack if they're acting like we did when we were their age. After all, it's human.