Yes, it isn't. Who have claimed otherwise? Many people think in black and white, including this subreddit. They are either needlessly optimitistic or too pessimistic. CBT is a good antidote for this black and white thought patterns Stuttering, especially its severe form, is a disability, it is a speech impediment. As any kind of disability, it is of course not sexy. But lack of confidence and being overly anxious are even worse. So it is better to be confident and stutter than stutter and being not confident.