Iʿtirāḍ becomes rhetorically effective only when the inserted clause offers a fitting nuktah: supplication, divine glorification, praise, warning, or a strengthening of meaning. An otherwise grammatical sentence does not become eloquent merely because it has been placed inside another.
The restriction “for a point other than averting an implication” distinguishes this technical category from iḥtirās, whose particular function is to block an unintended reading suggested by earlier words.