The commentary raises a scope question: if discourse requires fasih component words, what follows when a longer utterance contains a word judged defective?
The discussion distinguishes the test applied to an individual word from the conditions later used in defining fasih discourse. Objections to an overly sweeping conclusion must be examined carefully rather than being treated as a simple contradiction.
Key distinction: Establishing a property of one word is one step; applying a judgment to an entire expression is another. The length of an expression does not automatically erase a word-level issue.