If there is substantive work in the development of the prompt, then the applicant can submit the prompt for copyright. The finding seems pretty reasonable, if

If there is substantive work in the development of the prompt, then the applicant can submit the prompt for copyright. The finding seems pretty reasonable, if the machine is doing the work then the machine can claim authorship. Otherwise, we would say that the Pope was the author of the Sistine Chapel as they prompted Michelangelo to paint "a large curve display of heaven including with clouds and pictures of angels triumphant".