The biggest drawback to "printing" concrete homes, functionally, is rebar. They still manually place steel reinforcement.. unless they forgo reinforcement altogether or they include fibers or other reinforcing 'particles. When someone comes up with a way to economically place the rebar... then it will become much more than a side show.

Of course, using other materials may obviate the need for tensile reinforcement but I've not see a lot of progress on that front.

I think I would enjoy living in one of these houses - the 21st-century version of adobe.

I would want to plaster those interior walls. It seems to me you could scrape yourself up pretty badly on that.

I hope they have a nice variety of home designs.
Nobody wants to live in the exact same house shape as the next door neighbors.
The 'little boxes made of ticky tacky' song comes to mind.

I think it is neat to live in a little village like that. since it is three D printed, perhaps it could be customized to each person's needs?

clay: they've been building houses from clay for hundreds of years - no rebar.

It seems that a conventional concrete base slab is needed, and cannot have been included in the alleged build time. Also, the usual access problems from trying to locate heavy machinery into very rural areas is to be expected. Anyway the result is bound to be a significant improvement on ramshackle shelters from waste debris. I'm sure that the occupants wont care if their house is identical to their neighbours, millions of people live in houses with identical structural forms, worldwide,. Their answer to this will be like most, to customise the interior, and the exterior appearance. Maybe this would also be an answer to the growing homeless problems in the ''rich'' western countries.

I note they've given their nice new machine thingy a tent to protect it.
I wonder why they don't do that for their brickies (?)
(not that it's any different here in UK).

Yours etc
Retired (aka cured) Bricklayer.

PS.
Being totally unsolicited there is absolutely no charge for this letter of observation,
BUT,
if you take it to the Quantity Surveyor of your choice,
he will tell you how you could have got it for less.

@clay to your point, using hempcrete would easily replace the need for added rebar. (Hemp fiber mixed in concrete)

Compared to the shacks that they are living in now this is a castle. Great work with the 3-D printer hopefully many more of these can be deployed.