I don't think this article's analysis is accurate. The "human authorship" in Thaler's case wasn't about the abstract concept of human authorship; he literally did not put his name in the "authorship" field of the form, and insisted on review that his name doesn't belong there because he's not the author.

So the ruling doesn't necessarily endorse the Copyright Office's analysis referenced in the article (https://www.copyright.gov/ai/Copyright-and-Artificial-Intell...), and I think that analysis is just not correct. They describe a creator of AI art as simply "re-rolling the dice" when they try different prompts, but that's not correct, clever prompt engineering definitely allows you to "constrain or channel the program’s processing of the sourcenmaterial" and "alter[] the degree of control over the process"