A friend of mine has always wished that he could live in a geodesic dome house- although he has never lived in tornado country nor manufactured housing, he just has a fascination with dome houses. Their ability to survive extreme winds is part of that fascination.
Unlike this emergency shelter, dome houses can be very high end. The basic shell is made by blowing up a huge balloon and covering it with something like shotcrete, gunite.
I saw one built on some version of an off grid show. It was in New Mexico I think. It was very cool. A dome sprayed with concrete then covered with dirt and plants.
Most geodesic dome houses here are stick built with 2x4’s or 2x6’s. What you are describing is a concrete dome house that can be built that way but more often people will opt for a free form concrete home that can be built in almost any shape. By taking rebar and bending it to the desired shape and covering it with chicken wire looking mesh and blowing lightweight concrete over it and smoothing it. I’ve seen some pretty wild designs including a Fred Flintstone inspired home.