It's because it doesn't matter how copyrighted material ends up in a project. If an LLM reproduces copyrighted material (which is very hard to verify) then the lawsuit from the copyright owner can still sink even robustly funded projects.
The fact is, open source has much more liability than closed source software does. If copyrighted material ends up inside a private code base it'll be nearly impossible for the owner to discover that and sue.
The fact is, open source has much more liability than closed source software does. If copyrighted material ends up inside a private code base it'll be nearly impossible for the owner to discover that and sue.