My background is fine art, whatever that is. Much later I became more serious about photography, while continuing to paint, print and make pottery. I've heard a lot of "artist's statements" over the years, and have learned to completely ignore them. They usually have no idea what they're talking about, and their statements are often at odds w/ what they're actually doing and showing. The worst are these MFA types who love to drone on and on.
So that's where I would put Mapplethorpe's statements. He was a great photographer/artist, but all artists should be seen and not heard. Just like children, because that's what most of us still are.
Have I learned anything from my study of photography? Sure.....don't use fixer as a developer, and Russian lenses are great but run like hell from their cameras.