Lack of ambition in a movie is easy terrain for the reviewer. After the sheer volume of ambitionless films one has to sit through, one evolves multi-pronged approaches to criticize that seem to materialise out of thin air.
While not that staple, ambition without function (a la Krishnam Vande Jagadgurum) is still common enough, and generally inspires some critical chastising begging the filmmaker to focus on the right things.
And then there are the few films with their ambition meeting function (like in Ghazi), and startled as we might be, we know to put in the goo....