P: Generated images violate user guidelines

@Gregusaurus Just give it a day or two. It's rolled out over several days to ease the load on the servers. I've sometimes had to wait two days after initial reports.

"I just got 25.0 production version this morning, and generative fill is now included." -D Fosse
How did you get PS 25.0? I would love to have it. 

Hi @fabbui, it may not be the prompt that's causing the warning message, but how you are going about replacing the background. Make a selection of the area you want to replace. Then use the prompt box and generate. Here is my result using your “Dark Clouds with heavy lightning” prompt. Let us know how it goes!

ETA: If your prompt is too short, it won't work. Try this instead, “Red fiery scene that looks like Hell” 

@D Fosse this isnt a wide release yet so best to hold off on commenting on it until GA is released.

As I just responded to someone elsewhere, when stuff like this happens, head over to firefly.adobe.com to see if they work there. Sounds more like a bug than banned words.

When that happens, I go to firefly.adobe.com to see if they don't work there as well. If they don't, they are banned words (which would be very odd). If they do, it's a bug.

Fire & smoke are two words the bot does not allow at the moment

Even when Generative Fill is officially released in the wild, I believe it will still require some prompting skills, just like learning how to use many other tools in Photoshop. 

I also suspect it's the first step in creating a means to appeal a violation. Midjourney, for example, has such a process in place. When a prompt is appealed, it is sent to a bot that is less restrictive than its normal bot. "A blindfolded woman," for example might result in getting an appeal button. If the remaining words in the prompt don't suggest something nefarious going on, the appeal is immediately accepted. But I'm just guessing.