I wouldn't say that. There is no miraculous cure no. But there is something called "Del Ferro" its not really popular but its located in Amsterdam. I went there when i was 11 years old and they teach you a method that you can use to control your mind and speech that way you won't stutter. And if you use the method 24/7 with every word and sentence you can cure your stutter. Many people got cured of their stutter by the method. But my biggest regret was not keeping it up for long enough so i still have my stutter (it did improve my speech to get more fluent but it isn't cured yet) Do some research they have some videos on youtube if you're interested 😄