Personally, i only create backgrounds with AI and only if i don't have assets that i need already in Daz. So things like a city view that i place at a window or a custom skybox or something in the distance. I never use it to create actual persons for my game, those i still prefer to do manually in Daz
Remember to disclose this use in your project.
Edit: I don’t know why the image upload quality in replies is so bad to make the text unreadable. The small font says, “Classification of AI-Generated content is mandatory. Your classification will be used to add additional filtering tags to your project.” The Graphics box is checked.