To be more clear, I was incompletely referencing only the left side of this curve:

since it seemed closer to what the person I was responding to was speaking about. Ofc you are correct that the right side of the curve also exists, though the amount of effort to reach it seems extremely out of proportion to the level of confidence gained - i.e. it is far easier to just be dumb and think that (or rather, act as if) you know everything, than to make yourself smart and actually know everything, about a particular topic.