I agree with you that stuttering is neurological, which I think you are implying. Speech therapy offers a variety of approaches to help people reduce overthinking about and evaluating speech or stuttering. Such techniques are: fluency shaping, stuttering modification, breath control, pseudo-stuttering, and even speech therapy techniques that incorporates mindfulness, cognitive behavioral therapy (CBT), acceptance and commitment therapy (ACT), or hypnotherapy. Each technique is fundamentally different. But there's a common thread that runs through them all: learning to reduce overthinking. The writer of the post (that I summarized) seems to have taken out the technique but not the overthinking part. He didn't add an intervention and instead went straight to the unlearning part, at least, that's the gist I got from it basically