It's fun for thirty seconds, after which it is just tedious. If you actually want to "get stuff done", like building a toy city, you will want the menu that shows you what's actually available.
> Why even have a GUI why not a CLI which parses a config file that says "house boat".
Because that's obviously a bad interface as well. It's not like scribbly interfaces are the next step of evolution in human-computer-interaction. They're gimmicks. You're not going to go to Amazon.com and start scribbling something you want to buy. You'll type it in.