This is a fascinating thread.
Bill Belknap was my mentor. White House photographer during WWII, National Geographic, and major magazine photographer and well known in his day for photographs of the SouthWest Indian Nations. He drilled into me that the camera is a box to hold photographs. Its only job is to capture light. The PICTURE is behind your eyes.
I remember him commenting that watching people walkng around a showing would give you an idea whether certain photographs were actually pictures. Those that elicited a second look were in the running. Those which had people comng back around after having made the first circuit deserved to be called pictures.
He seldom discussed Art or art in photography. He did recognise that photography is visual art done with tools. Of course, painting, sculpting, drawing, architecture, and gardening are also visual arts done with tools. The finished product must then be judged by others than the creator for the decision whether the art produced is actually Art.
An artist is someone who produces things to be enjoyable to and enjoyed by others.
An Artist is one whose works have remained popular beyond his life and era.
An Artiste is one who judges himself and his own work.
Pops