>Also a phone already starts with very deep depth of field because again smaller sensor size thus smaller focal length etc. Most images at their lower f stop is already in focus. So the ability to reduce aperture or simulate shallow DOF is trying to give users more of the creative control that larger sensor cameras naturally have (need to manipulate because of their larger sensor size) and doesn't make much sense to me.

Totally agreed. I wonder if it will make 180-degree shutter angle video easier to achieve. The only way to achieve this on current iPhones during the day is using a pretty strong ND filter.