Yes, the documents are clear. Unfortunately, minds can be fuzzy and many seem to be making their own independent (and incorrect) assumptions about what the documents mean.
I'm sure there are misconceptions among the general public, but I can't believe EMT's and ER personnel are not trained in this simple area.
I'll put it this way-- if some ER Doctor ordered "no resuscitation" because somebody told him the patient had a Living Will, then I would love to handle that lawsuit.