Nothing points to that, in fact even in this website they had to lie on how stablediffusion actually works, maybe a sign that their argument isn't really solid enough.
> [1] https://arxiv.org/pdf/2212.03860.pdf
You realize those are considered defects of the model right? Sure, this model isn't perfect and will be improved.
You can call copying of input as a defect, but why are you simultaneously arguing that it doesn't occur?
It's both undesirable and not relevant to this kind of lawsuit.