Hi There is nothing wrong with prefab wall Built in the factory you better control of the quality. This method is no different having prefab walls made of wood in factories. The question you did not state was how the wall are attached to each other to the floor slab. You can have a very good wall but it is only as good as it is tied with the other walls and slab. I'm curious if they can make theses wall with foam attached to one or both side to add R value insulation to save a step later in the process of building in the field

Working on more information on the process, perhaps a future 10QV episode.