Anyone who thinks their work is good art because of the process they use is pretty foolish. I don't acually know anyone who thinks that. I do know people who think one process is better than another.
I think any process has it's own unique visual language and a photo artist can lend a lot more power to his/her work by having a feeling for the process they are using. An image might work in one medium and not another because of how that medium conveys the image. You can't seperate process from the art as a maker of that art but it is annoying to show work and have people only interested in how you made it and decide whether it is good or not because of that. I work in pl/pd because I like the way it works and feels but it is very annoying that every time I have had an exhibit the gallery or exhibitor insists on emphasizing the process as the main point of interest. Personally I think the process is my business as an artist, not the viewers business.