Greetings suibhne
Some parts of their KS vision are also in-game right now (specially regarding AI, item interaction and flexible questing with open choices) but they are not apparent, because they have set the foundations and the frameworks before. If they tried and more force brute approach they probably would have something more to show right now, but they really can't afford that; they are a tiny team so they had to build frameworks and automatic systems to build the world rather that doing everything by hand. To me that's a smart move, for others it might be seen as a fail of delivering. I am not trying to justify their delay tho, nor they are. They apologized for not doing a more realistic schedule.
My point is that you are perfectly rightful to make your own opinion based in what you can see in exanima, but if you are not have been following the project closely that can be misleading. A lot of work under the hood have been done, it should make advance the game quite faster from now on.