There's no saving you,  you're too negative. He's not a random dude, he's being working on his method for decades. Willian d parry. Research for gods sake. tourrete syndrome is another beast of its own. They're not comparable even if they share similarities.  In the case of stuttering, people get sucked in a feedback loop, they 100 percent trained themselves to stutter more and more and more spiraling into a stutter that can't be controlled. If you reinforce a behavior you will keep doing it. Stuttering cannot be cured, that's for sure, every single human being stutters once in their life, is something that comes with the labour of speech.  But you can control it, that's the whole point.