Comment by nodja

That's only correct for specific models and not what parent was referring to.

Stable Diffusion 3, an open weights model, was laughed at at release for not being able to even generate a woman laying in grass. The community attributed this to the heavy dataset filtering. Since then other open weights releases have been made with no NSFW capabilities and the community claims they're not as good as anatomy as well.

You can google "stable diffusion 3 woman in grass" and press the images tab to see how the model failed spectacularly.