After watching the video, it's evident this method of construction has another disadvantage over the lifecycle of the structure: The walls cannot be easily modified. (And this is a characteristic and complaint of nearly all poured-in-place concrete construction, often cited by institutional caretakers of brutalist buildings.)
An economical house should be able to change and grow according to the needs and means of its owners. That's much more difficult when adding a door or window requires a diamond-blade, water-cooled saw to cut through a thick structural concrete web while avoiding embedded service conduits. In comparison, walls of concrete block, brick, and wooden studs are more readily modified, though each has other favorable and unfavorable characteristics.