You're missing (or ignoring) the point of my argument. A human who learns from other work can only apply that skill in a limited amount. Even if a human learns to copy Van Gogh's style and continually churns out minor variations of his work, they cannot produce dozens per minute. Let alone learn to do that equally well from several hundreds (thousands?) of other artists. There's a scale difference in human learning versus machine learning that is astronomical.

I'm not sure what you're going on about with "fear". But I think that training a model on non-public domain content, without the permission of (or even crediting) the creator should be illegal.