I'm increasingly thinking that the E/I distinction is not useful and maybe even harmful. It causes too many assumptions and generalizations that aren't valid classifications or often even close to it. This is a good example.

Personalities are complex. People can be introverted or extroverted. They can also have personality disorders and deficiencies independent of the two. I think generalizing and pigeon holing either introverts or extroverts does them a disservice.

Above all, people are incredibly malleable and adaptable. Most people are somewhere in the middle, or go through several states of personality based on their experience and stage of life. I know I have.