1) for their own creative fulfillment. Generative AI makes no difference.
2) for enjoyment / appreciation from other people. Generative AI makes little difference here since the average person's art is likely to be mediocre with or without generative AI
3) as a way to earn their living. Here generative AI will make a difference in some art professions, but that doesn't seem to be the implied scenario of the comment I was replying to.