The problem with this view is it’s an assumption that changing the way you’re speaking will become natural, effortless, spontaneous, unconscious, etc. there’s very little evidence over decades of stuttering research showing that can be achieved. Fluency shaped speech, even in kids, is not the same as the speech of people who recover or don’t stutter. Speaking more slowly isn’t a cure, it’s like walking with a cane. It may help you but you using a cane long enough isn’t going to cure your cerebral palsy.