It's not "creative" in the sense of incorporating a drum track or photograph into a composition you're developing, it's "creative" in the sense of asking for a vague style and getting it, which is pretty much exactly the tool doing the entire activity. The author explains in detail that it's
not their vision, its just a list of styles returned when asked for a list of styles, and they don't actually know what the Memphis Group even is...
Would you consider me to have "created" Billie Jean if I type "eighties music" into a music search engine and select "Michael Jackson" from the list. Or to have "designed a logo" if I pay a human to design some logos for me and pick one.