Like I said before, I believe there's a strong argument that Stability AI / LAION's use of CC-{BY/SA/ND} is likely allowed under the terms of all CC licenses due to the works being shared without alteration and with attribution, released under CC-BY-SA 4.0 (LAION) and the Stable Diffusion model being released under a permissive license (CreativeML Open RAIL-M).
The real question is if the images generated by the models need to provide attribution to every single weight involved in generating that image. That's a lot more complicated and unclear, but quickly gets into questions like "Should artistic style be copyrightable?" and "What amount of source material is required to constitute a copyrighted work?". But as of right now, I don't see how any of this is violating the letter or intent of CC 4.0