I agree that there are cases where it's impossible to treat, but I seriously doubt that it's the majority, since from what I noticed, the majority, or at least a good share, don't stutter when they talk to themselves, to pets, family, friends and in other comfortable situations, which means their brain can produce "normal" speech and the only difference is the circumstances they are in, which hints that the real problem is psychological and treatable. Now, we see recovery not so often because low self-esteem, social anxiety etc. are also hard to treat and not everyone succeeds, but it's definitely possible. As an example, let's say someone says they have ADHD, which is incurable, only when they are around others, and it gets worse or better when they are around a particular group of people. I set aside the fluctuations because I assume many mental and neurological conditions will have "bright windows", and healthy people will also have differences in function depending on a day. But it's very suspicious that purely social circumstances is the primary thing that affects the symptoms, and I would doubt whether the ADHD is the real culprit and it's impossible to get rid of, or it's more of a symptom of psychological distress, caused by something that can be indeed treated and cured, albeit with difficulty In my case, I suspect that I right now I am having some kind of regression due to the severe stress, and my brain decided to subconsciously imitate the freshly recalled speech patterns I had as a kid... for the reasons only it knows lol. Now I regret looking up stutter info back before it started, maybe it wouldn't be like this if I didn't