I completely agree. We have the neuroanatomical and neurophysiological data to support this. However, the underlying neurophysiological root of stuttering gives rise to listener reactions, thereby eliciting adverse cognitive, emotional, social, and behavioral consequences. It cannot be ignored that people who stutter are stigmatized and stereotyped in society. As you said, look at the suffering people share in this community. While we can treat stuttering as a speech-motor disorder, to fully target the entire condition, we must also consider the resulting factors in our treatment. If we shave off the top of the stuttering iceberg (overt stuttering behaviors from neurophysiological differences), we are still left with the underlying 80% of symptomatology that accompanies stuttering that is not directly mitigated by altering fluency.