Are there any statistics regarding the incidence of pilot errors relative to age?
Until I see that, I'll asume that things are similar to the way they are in my profession: older people will get more confident regardless of how competent they are, and young people will be less confident regardless of how competent they are. And the competence is pretty much independent of age. A competent person with a lot of experience will be stronger than a competent person with little experience, but the competent with little experience will still majorly outperform the experienced incompetents.