It's been fully released for years, if there was another game planned after release, it's not technically a demo, so much as an experiment in the genre.
Based on all the responses here, very few people actually know much about the game...
Actually, he's got a point with 7, though he could've worded that part better. You will get a lot of scammers trying to tell you they have ideas, and then just sell you AI generated art for your cover. As for the rest, I didn't read your story, but based on what he said, let me try to translate...