This idea that copyright and IP shouldn’t exist at all is kinda absurd.
For the majority of human existence, that was the default.
Copyright exists as an explicit tradeoff between the rights of the public to be able to do as they please with stuff introduced into the public sphere, and a legal limitation infringing on the publics liberty for a limited time for the purpose of encouraging the creation of more works for the public benefit. It was not introduced as some sort of inherent right, but as a trade between the public and creators to incentivise them.
Stripping it away from existing artists who has come to depend on it without some alternative would be grossly unfair, but there's nothing absurd about wanting to change the bargain over time. After all, that has been done many times, and the copyright we have now is vastly different and far more expansive and lengthy than early copyright protection.
Personally, I'd be in favour of finding alternative means of supporting creators and stripping back copyright as a tradeoff. The vast majority of creators earn next to nothing from their works; only a very tiny minority makes a livable wage of art of any form at all, and of the rest the vast majority of profits take place in a very short period of initial exploitation of a work, so we could allow the vast majority to earn more from their art relatively cheaply, and affect the rest to a relatively limited degree, while benefiting from the reduced restrictions.
If you were to train human children on an endless series of pictures with signatures in the corner, do you seriously think they'd not emulate signatures in the corner?
If you think that, you haven't seen many children's drawings, because children also often pick up that it's normal to put something in the corner, despite the fact that to children pictures with signatures is a tiny proportion of visual input.
People also mimic. We often explicitly learn to mimic - e.g. I have my sons art folder right here, full of examples of him being explicitly taught to make direct copies as a means to learn technique.
We just don't have very good memory. This is an argument for a difference in ability to retain and reproduce inputs, not an argument for a difference in methods.
And again, this is a strawman. It doesn't even begin to try to answer the questions I asked, or the one raised by the person you first responded to.
Neither of those really suggests that all (that diffusion is different to humans learn to generalize images is likely true, what you've described does not provide even the start of any evidence of that), but again that is a strawman.
There was no claim they work the same. The question raised was how the way they're trained is different from how a human learns styles.