The intent of this law is to insure that the visually impaired have access to the same works as the non-visually impaired. If copyright laws didn't provide for this excemption it would result in a lot of material simply being unavailable to these individuals. So, bottom line, I'm in favor of the exemption (even if it means blind people get sirbruce's work for free).
It would be one thing if the U.S. government's position was to tighten up the language of the exemption, but it appears from the article that they are trying to elliminate the exemption altogether. Shame.