Previous arguments aside.
I notice there is a construction type vapour barrier, natural insulation over and some kind of fabric outer layer.
Assuming the outer layer needs to include some kind of man made material in its make up(avoiding rapid breakdown/deterioration). The inner membrane, I would assume to be a breathable material that lets moisture out but not in(such as Tivek roofing membrane). Finally a hemp insulation sandwiched between the outer/inner skins.
I spent several years insulating buildings both domestic and commercial. I cannot see this being effectively breathable. It needs to breathe to allow air flow within the brood/store chambers to avoid significant heat, moisture and mould build up.
In similar situations within the building industry, a cavity between the inner core and insulation is required for airflow. This cavity needs to be open at the base with an appropriate insect mesh. This also acts to dissipate moisture build up within the cavity escaping through the inner membrane.
Unless their cross sectional diagram is incomplete, the inhabitants would suffer in all conditions.
Insulating homes and businesses in this way has been hugely successful. Some of the projects we were involved with never used heating in winter. However, they complained of over heating in summer. Designers had under estimated the efficiency of insulating in this way.
Airflow is key, without it the inhabitants will possibly cook.
Apologies in advance for the long winded post.