We are talking about a word with multiple definitions and it’s getting philosophical now. Depending on where you look or what context you use, creativity is how you choose to define it. (I hate saying that here because, well, its philosophical and any back-and-forth rapidly becomes subjective. On the intertubes, that usually doesn’t work out very well for discussion.)

https://en.m.wikipedia.org/wiki/Creativity - Creativity is the ability to form novel and valuable ideas or works using one’s imagination.

https://plato.stanford.edu/entries/creativity/ - We may ask the same question not just of artworks but of any creative product, whether it be a new scientific theory, a technological invention, a philosophical breakthrough, or a novel solution to a mathematical or logical puzzle. (There is more to this regarding creative process, so feel free to read more.)

https://dictionary.apa.org/creativity - the ability to produce or develop original work, theories, techniques, or thoughts. A creative individual typically displays originality, imagination, and expressiveness.

A discussion about a definition is usually fruitless. I just have to cap this saying that I simply maintain that AI can be a tool for creating original art. (Art doesn’t need to be a painting or a picture.) We, as creative humans, can create art with any tool we are given.

If you want to get philosophical, please do. I won’t argue my point further that it still takes a human to provide creative input to get some kind of unique output.