You pretty much need a parent or some other reference person (which can be people in the internet) to teach you that, though. The chance of that having happened is a bit higher the more mature you are, just because you had more time to also figure out the other important things of life.

I think it's only a small difference though, because the unwillingness to learn new things also increases with age. I think the highest chance for someone to want to know how things work is around 25-35 or something. However, as you say, people of all ages generally don't care how things work, and all ages have people that do care how things work, it just depends on the person.

But probabilities are still a thing and I think it's a bit more likely for teenagers to not care to understand how something works.