[roc]

Cul-de-sac suburban developments rarely connect to neighboring developments. They don't even always connect to all of the larger streets that they border.

This lack of connectivity between them is the primary criticism. The map of Istanbul suggests that you might wander into a dead-end alley or cul-de-sac, but one does not enter what amounts to a neighborhood full of dead-ends, the only exit from which is the way you came in. It certainly doesn't suggest that any notable fraction of city is subdivided that way.