I basically agree with the author that the iPhone's camera is inferior to dedicated cameras, at least in the hands of a photographer who's learned to use them. To me it's striking that there's even a question. My first camera as a child was a cheap film camera[0], and the first digital cameras I saw firsthand, as cool as they were at the time, had even worse quality. Now smartphones have much better quality for people pointing and shooting and do it while crammed into a device that does many other things.

Now, I'd hate for dedicated cameras to go away. I love shooting on SLRs, digital and film. I see smartphone cameras not as pretenders to the throne but as democratizing tools lowering the barrier for entry and a great way to get shots when you don't have your dedicated camera.

[0]: for the record, the issue with the camera was that it was cheap and I didn't know what I was doing, not that it was film.