Art Conforming to Human Nature

At the end of the article Art and Human Nature: Some Thoughts on Steven Pinker's Critique of Contemporary Art by Derek S. Sanderson and Stephen K. Sanderson, the statement "for art merely to conform to human nature, as Pinker is simplistically suggesting, would result in its death." I had a hard time understanding what this statement meant exactly. I had to look at several definitions of conform before having a brief understanding of what the sentence is saying. The definition of conform being - behave according to socially acceptable conventions or standards, kind of makes the sentence make more sense. For art to behave to socially acceptable standards, it would result in it's death. If art had a limit, it wouldn't be art no more. Art can't have a limit. It evolves everyday and changes from artist to artist.