I'm very confident in my abilities, and learning new things is my favorite thing to do. One can be confident without facing petrification, just like one can be unconfident and decide to give up learning new things.

I'm not saying this point of view doesn't have its place. I just think it's important to understand the dynamics involved with it. You don't tell someone they don't know as much as they think they do unless you're trying to stop them from doing something (you feel) they shouldn't be doing. Trying to paint it as enabling them is disingenuous. If you want to enable them, you have to work to help them learn good behavior in addition to limiting the bad behaviors.