Again, you’re obviously ignorant of how this stuff actually works. That is simply not the case. Otherwise the training set would necessarily need to have images of every type that you hope to generate, an impossibility and which obviously isn’t the case - a very quick look at some of the crazier things people have generated disprove it. Training the model on nude and clothed images of adults and clothed images of children - as others have pointed out - would allow you to generate nude images of children. Could a model have been fine tuned with CSAM - yes; but it’s certainly not a given, and probably not necessary.

The stable diffusion sub has somewhat migrated over to the fediverse. You can find more information about how this stuff actually works beyond your introductory understanding of the concept there.