Isn't google search business built on "unethical sourced data", they keep a pirated copy of every website they encounter and feed it to their algorithms.
Isn't by definition human culture built on "unethical sourced data" remixed by the human brain? Example: imagine you are creating a punk band. You will use all your background knowledged of what punk is, the band's you like and maybe if you're creative an unexpected source of inspiration from things outside the world of punk? How's that essentially different from how stable diffusion works?
Another good example is the "Who let the dogs out" song. There's an article / podcast at https://99percentinvisible.org/episode/whomst-among-us-let-t... where they try to find the origin. At some point even the creators don't really know where the source of the inspiration came from but some of the sources are geographically close which seems to point to a common source. Some of the variations seem quite different, some are pretty close.
Overall I think this is just computers replacing some human capabilities, like machines in factories. You lose most of the poethics in the artistry of a human doing something by hand and gain the capability speed. Doing x per second instead of y per month. If you need the symbolism and the poethics of art you'll keep using a human. if you need to generate a thousand variations of an idea you'll use stable diffusion.