I agree with what you are saying. I just know how much i hate/hated my stutter and how low it make me feel. When i'm drunk or on mdma(not often haha) i rarely stutter. Well i stutter, but i don't have as many blocks because i have no fear anymore. Fear, anxiety, and stress is 80 percent of your stuttering, believe it or not. My point is when you work with yourself to try and eliminate THAT fear and THAT anxiety, then you will start seeing progress.