While I agree that forcing yourself to be fluent and not accepting yourself as you are can be toxic, I believe there are multiple types of stuttering, and some can certainly be cured in my opinion. It really all just goes down in your head. People with a severe stutter will obviously have a much harder time, but for those who only stutter in certain situations (like public speaking) can definitely benefit from this, and after months, even years of practice, they might not have any problem at all. Even non-stutterers can be disfluent, and there are lots of people who stuttered that eventually found a way to overcome it. As someone who's struggling with stuttering as well, I know how it feels, but falling into despair and claiming it cannot be cured is something I refuse to accept. I've been stuttering for more than 6-7 years (as I developed the condition later on), but only now after years of research am I finally beginning to see the light. Things may not always work out, but as your comment implies, you have to be at peace within yourself. Thank you for the comment!