Earlier quoted context omitted.
> I don't give a cent about what random people think about me But you did post about it.
Not caring what people think doesn't mean he can't communicate with others. Introvert doesn't mean asocial.
Edit: I find that most people who scream “I don’t care what you think” generally mean “I’m not influenced by what you think”. Which is an important difference, and helps explain getting red in the face about someone else’s opinion about which one don’t care.