My earliest Speer Manual is #11 and I don't see that picture in it.
Having started shooting before the need for hearing protection was fully appreciated, I can say that the choice is stark: 1) use hearing protection EVERY TIME, or 2) accept that you will not hear much of what your children and grandchildren say to you and that you will be forever distanced from them.
My grandfather was a machine gun instructor at Ft. Benning in the 1920's through the early 1940's. When I was a child, he could not hear much of what I said. After my voice changed, he could understand what I said to him, but since he didn't care for what I was saying, he pretty much stopped talking to me.