You took something out of context and as a consequence, are misinterpreting it. Let me give you something to think about:
You are not misunderstanding the link between decoding and comprehension. While decoding skills are necessary for learning to read, they alone are not sufficient for comprehension. As in your example, a child can “sound out” the word dinosaur but if she does not know the word dinosaur in English, she will not understand the word that was decoded. The fact that she understands the concept of dinosaur or is able to sign dinosaur in ASL is useful in a broad sense; however, this knowledge is not adequate to achieve success in the reading process as it gives her little knowledge of the English word.
This is from your same link, and is demonstrative of the way that concept and whole language is used to teach reading of the English language. It is a matter of understanding the symbolic nature of language to begin with, and the using those skills in a cross modal way. For instance, if the child knows the word "dinosaur" in ASL, they have the concept of a dinosaur. It is simply a matter of their understanding that the print word is simply another symbol for the concept they already know. This is the problem you run into with cued speech. It does not provide any conceptual information. Conceptual information is mandatory for reading comprehension. If a child is language delayed, as are so many of our deaf children (as the result of not having linguistic input from birth via ASL), then simply recognizing or being able to repeat a word is not indicative of comprehension.