I just grimace at stuff like this. My biases: 1. After being a severe stutterer, I achieved fluency. Stuttering is treatable. People with severe stutters can, and do, achieve greater fluency. 2. I'm a parent with a child who's had spinal cord and brain surgeries. First, I applaud the excellent work SLP's and neurosurgeons do across the world. And their patients who put in the work to rehabilitate and improve. I hope that one day, technology will exist to help people with debilitating neurogenic conditions. For instance, helping people with spinal cord issues walk, or have better control of their bowel or bladder. I grimace because people are so cavalier about brain surgery. When non-invasive treatment exists, you exhaust all avenues there first. I grimace because OP's wording implies that it's as easy as electrical stimulation. I grimace because this is a treatable condition that OP suggests we apply technology as a solution. Speech is much more complex than physical activities. e.g. walking.