The problem artists have with LLMs is not that they routinely output copyrighted works (it can happen, but isn't common), but that they copy human-expressed knowledge and art styles on an industrial scale, thus destroying revenue streams that supported or encouraged creative expression in the past. I doubt this is going to be solved via existing copyright laws. I suspect that the need for disclosure of copyright on the source material is to build a case for more novel legal protections for artists down the line.
I was attempting to say that in my first sentence.
> they copy human-expressed knowledge and art styles on an industrial scale, thus destroying revenue streams that supported or encouraged creative expression in the past
I currently have no opinion on art works as my focus is on knowledge and LLMs. I just did a search on Amazon for "child care" and found 40,000 books on the subject. I doubt the world needs 40,000 books on child care so if LLMs remove the revenue stream from these authors maybe they will spend their time writing books the world needs.