I addressed this by saying if the training data counts as the human input, then the creative authorship of the weights are all the creatives that involuntarily supplied the training data -- not the labs training the models.

I agree with that copyright holders that provide training data were screwed over, and should be fairly compensated.

That said, a lot of work that goes into training a model is editorial: structure of the model, training regime, etc . Copyright applies not just to the literal elements, but to Sequence, Structure and Organization, which is how poetry Anthologies are under additional copyright to the editor, and not just divided among just the poets.