Yes, but I think their printer design could be improved.
I would go for the printer being far less weight by making the whole thing a cable truss and winch structure. That should cut the hardware cost in half or better, like the way a travelling circus tent can be assembled entirely without a crane, yet packs into a tiny box. The downside is you can no longer assume a rigid structure, so you need cameras and alignment marks for precise positioning - but you probably needed them anyway. You also can't make any accelerations above 1G, but that should be fine for housebuilding.
And obviously, their design only makes the walls, but I would want to do foundations, roof, insulation, plumbing and electricals all with the same machine.
Yeah, getting plumbing and electrical as part of the print seems key. The current ICON system looks cool, but at the end, you have a concrete structure with no openings for these elements. Pictures of ICON buildings show electrical installed entirely with visible conduit, and protruding J-boxes, and don't show rooms with plumbing at all. I don't think many home-buyers would want a home without utilities embedded in the wall as in traditional construction.
