I was going to type up a big reply to this but I'm going to put it pretty simple. I disagree to a certain extent with what you're saying, and here's why. I, and many other people who stutter, have overcome it, in most situations, because of having a different goal. This goal is the ability to speak, rather than the ability to speak fluently. I, and many others in some situations couldn't/cannot say anything at all due to severe blocking, FSD in the diaphragm, etc, etc. I concentrated on fluency so much and for so long, trying fluency shaping techniques that it became a far fetched dream rather than a goal. The truth is, I'll never be fluent, and I've become happy with that fact. The goal is just to articulate what I want to say, using techniques such as deliberate dis-fluency, etc in order to do so. And if fluency comes with that, great! I see so many people, especially on this subreddit who have severe stutters and are constantly trying to work towards fluency. Many of which are constantly being let down every time they try a new fluency shaping technique. This was the same with me. I plan to make a video about this in the future. There's not much hope in being able to speak fluently when one can barely speak in the first place. It depends on severity. That's just my 2 cents.