As a written form of "stream of consciousness", it seems to have a lot of value to me. It's noisy, inefficient & meandering -- all the things those polished artifacts are not -- but it's also where you can explore new avenues without worrying about succinctness or completeness. It's like the first draft of a manuscript.
Certainly, it can have its use. But I question if it is stronger than previous generative techniques for creating many things. There have been strong tools that you could, for example, draw a box and say this should be a house. Add N rooms. This room should be a bathroom. Add windows to these rooms. Add required subfloor and plumbing.
Even with game development. Level editors have a good history for being how people actually make games. Some quite good ones, I should add.
For website development, many template based systems worked quite well. People seem hellbent on never acknowledging that form builders of the late 90s did, in fact, work.
Is it a bit nicer that you can do everything through a dialog? I'm sure it is a great for people that think that way.