I don't believe in 'arguing from authority' or in 'art' as some coherent thing that one person can affect too much. When I see the same technique and vision practiced now as it was 50 years ago, that's not art, that's just replication of a safe behavior - and it's not artists doing that.
AA was attractive to me, for the most part, because he gave me an insight into controlling a process that, at the time, I had very little control over.
For a long time, I though of AA as a master in seeing things and thought that his iconic photos were typical of his work.
I never really wondered why I didn't know more of his photos than Moonlight Hernandez, Bridalveil Falls and a few otehrs. What was clear to me that he was succeeding in capturing and displaying things in a way that most others before hid had not. But very quickly I became certain that I was not interested in copying his techniques to make perfectly managed images of 'things' and I left it at that, still holding him in some repute.
Several years ago the Corcoran in Washington, DC, hosted a large traveling show of AA and, as a matter of course, like Catholics going to Mass at Easter, I went. It was a stunning revelation for me. There were a very few of his 'masterpieces,' but they were scattered in a large collection of perfectly made but totally unexciting, uninteresting pictures of rocks and cacti and hills.
In a display of compulsive behavior he lavished exactitude in composition and processing control that the actual subjects didn't warrant. To me, not every subject deserves the same degree of attention and care; doing so, elevates the process over the content.
To me, this is what characterizes too many people, particularly in photography; the certainty of technique and procedure in pursuit of perfection totally replaces the uncertainty of artistic vision.