I'm a Chinese studying abroad in Japan and two weeks ago I was diagnosed as a mild PWS by my speech therapist.And I agree on what you said but at the same time I am thinking that if the opposite who is arguing with me pokes fun at my stutter then I don't think he/she is really having confidences in arguments with me LOL. But just bc I stutter, everytime I win someone over arguing, I feel far more proud of myself than normal speakers.