If “walad al-ḥajjām ḥāḍir” is used disparagingly, where does that effect come from?

The Subject through Iḍāfah and Indefiniteness: Rhetorical Purposes

• Because all iḍāfahs are disparaging
• The chosen relationship within a particular discursive setting
• An inherent lexical inferiority in the profession
• Because walad is indefinite