I feel like you guys are creating a strawman here.  They didn't say any of this.  If you are led to think this way then it is something with your personal experiences but you should realize when you are putting words in their mouth and creating a strawman of your own making.   It is perfectly understandable to ask the question why we do not stutter on the same things alone.  I could easily argue anyone asking that question leads to the straw man you created but does that people are simply not allowed to ask such a question because it's heartbreaking?   What is the new research that debunks the OP?  That would be a far more productive response than shaming.