Rejected ghulūw is so inappropriate or unconvincing that the exaggeration undermines its own intended effect. Artificiality becomes more noticeable than the trait being praised or blamed.
Acceptable ghulūw frames the impossible image through apt qualification or vivid imaginative construction, enabling the audience to grasp the heightened quality without mistaking the scene for literal reportage.
Consequently, naming a type is only the first decision. Context, particles, aptness and imagery must be examined separately when assessing rhetorical merit.