I don't think that's true to be honest. You think thats the case, because your stutter is the most prevalent manifestation of your anxiety... but even if you didnt stutter. The anxiety is still there, people without stutters still get rejected socially for other reasons. I don't disagree, I would be a lot LESS anxious if I didnt have a very bad stutter, but I would still be anxious. It is a natural feeling for many people