Meaning if I were to repurpose that work it could be a copyright violation depending on the usage the artist agrees to.
Training an AI doesn't "repurpose" that work, though. The AI learns concepts from it and then the work is discarded. No copyrighted part of the work remains in the AI's model. All that verbiage doesn't really apply to what's being done with the images when an AI trains on them, they are no longer being "used" for anything at all after training is done. Just like when a human artist looks at some reference images and then creates his own original work based on what he's learned from them.