Art criticism is the practical application of a branch of philosophy called Aesthetics, the theory of beauty and art.
Plato, Aristotle, Kant, Hegel, they all had their own theories of Aesthetics.
The Catholic Church has long had a school of art criticism based on the philosophy of Aquinas, which in turn was based on Aristotle.
The Soviet Union had a vigorous art criticism based on Marxism.
The Romantics, the Enlightenment, Postmodernism, they all have theories of art and schools of art criticism.
There are as many philosophers as there are artists, and they all have their own theories of art (the purpose of art is to evoke thought, no, awe, no, the worship of God, no, shock, no, class consciousness, no, the void, no, pleasure, no, democracy, no, insert your favorite value of the moment—hey, I heard that, the desire to buy it). Combined, they constitute a literal Tower of Babel.
Art criticism, like philosophy itself, is chaos, a bottomless pit of irresolvable controversy.
Will immersing yourself in this muddle make you a better photographer? Being of a pragmatist bent, I say prove it. Show me the work of a photographer before and after getting tangled up in these disputes and demonstrate the benefit. Otherwise, it’s just an article of faith.
Can someone come forward and show us the difference a thorough course in art criticism has made in their photography? I extend a respectful, if challenging, invitation. I’ll be fair, but I won’t be easy.