I'm not saying they "deserve" what they get, not any more so than the people who found themselves out of work after weaving or sewing machines were invented, but that's technological progress.

Perhaps we have a very different understanding of what "art that matters" is, certainly I'm not thinking of anyone producing art at volume for a corporate IP. In any event, nothing ever stopped such a corporation from reproducing a certain style with cheaper labor, whether it's human or not. If you were, say, an art director working for a corporation, your job was never to perform much of that manual labor. AI isn't replacing you.