I guess in the same way we accept that the open source & licensed code was used to train the models, or in the same way we accept that Google / Meta / Anthropic and all the others use copyrighted material to get the degree of intelligence that it needs.

If you extend this thought and this rationale to humans as well, we shouldn't be allowed to "get smarter" by consuming copyrighted content (movies, books) or anything really - as we might end up referencing them.

I think copyright laws are being bended a lot here - and I don't think (as a copyright holder myself) I'm too concerned about that - if this then allows humanity to move forward. It's a philosophical topic really, more than a legal one