This is one step above adobe, essentially. Not sure you could install rebar by deposition.
While I agree that deposition construction is great, not everything can be built by deposition.
I lived in an adobe house once. It was great. Warm in the winter and cool in the summer. Very energy efficient.
It’s a question of materials. It doesn’t have to be concrete, or the same concrete we have now. Some sort of composite, or combination of materials from cements, to plastics, cellulose, metals... Carbon, glass... Who knows? All sorts of thinks might make for an excellent structure.