> And for most people it seems to work satisfactorily
Most people apparently don't look at their pictures.
The "enhanced" photos I've gotten from the Iphone for the last few models have just been getting worse. They look OK if you don't look too closely, but then they're just wrong. Blurry details on the same focal plane as crisp ones, crappy details with translucency, hair or anything else that confuses the "foreground/background" detector, they're just bad.
My DLSR will be in service for quite a while longer.