Last paragraph is the upcoming reality, and if the economic incentive to hone your craft is eliminated, the quality of human generated art will just get worse and worse.
Indeed, the tenor of the article is that AI will not reach the levels of creativity that humans display, instead our expectations of creative process will be lowered by the sheer quantity. Our expectation on quality will decline so far that we consider what AI produces to be creative and since that is produced far cheaper than humans can, AI creativity will become the new baseline.