If those person who claim were true than all people should develop stutter know. Or another thing children who stutter and they dont masturbate so its baseless. But one thing is true , stuttering is because of dopamine inbalance, scientist claim for us its too high and masturbation makes the dopamine to rise so i thing thats how they relate. But that should last for only couple of minutes and later the dopamine will be corrected. So again the theory is baseless and i thing in one area where dopamine should not be too high and unfortunately for us stutterers we have high amounts of dopamine there. I think thats the theory. Again just a assumption