I always assumed that image generation services had prompt and output filtering. The reason I believe this is that I've crafted prompts that seemed to pass the prompt filter, generated, and then were unable to be displayed[1]. Presumably there is an output filter that determines if the generation violates ToS against things like nudity. Though in my case, I wasn't able to generate images that too closely resembled An…
So it is clear that are many filters involved, some input filter, then the AI is "aligned" and threats you as a child , then there is an output filter.