The local dialect does not affect the actual language. Every Arab country has its own local dialect but they all use Modern Standard Arabic for anything formal (which includes books, newspapers, speeches, etc..). This is not open for Hebraization. Even if that was true, it certainly wouldn't cause grammar changes. That's just ridiculous.
Motorcyclist in his 20s dies after crashing near Gedera (Haaretz)
from the article: Israel's textbooks in Arabic are full of mistakes, study finds