Why is that surprising? It's like why AI art is a running joke to real artists, and LLMs are a joke to good software engineers etc.
Random text/image generators have no intelligence, no knowledge of design, building regulations, engineering, physics. A fun little tool to set up boilerplate is its peak usefulness.
If this is aimed at me, its not that I believe the act of creating generative architecture software is trivial. Perhaps too flippant above. I believe it is probably quite challenging. Which is an excellent reason to create such a software, because it's much harder for someone to quickly steal or release a competing product. I was only surprised someone was not immediately using this thread to advertise their house generator.
“Quite challenging” is an understatement. The problem is far too big for the tech startup model. You would need to get a bunch of expensive skilled engineers, and a bunch of expensive domain experts (from many domains, since “building houses” is a massive problem space with thousands of sub-domains), and work on it for probably years before you had an MVP. It’s not the type of startup that easily attracts investment.