That's like claiming that evolution is nothing more than just a little randomness, while completely ignoring the arbiter of the final product: natural selection

That's like claiming that evolution is nothing more than just a little randomness, while completely ignoring the arbiter of the final product: natural selection. Creativity is the same - it isn't just randomness, it's *meaningful randomness" leading to new insights and experiences, and the arbiter of that "meaning" is a human being. Creative people are actively, and often subconsciously, filtering out all the meaningless junk. No, introducing noise into your AI won't make it more creative. You need the filter to apply to the result - which is currently impossible because that filter requires actual understanding, which today's AI is incapable of.