This was difficult to understand as a non-native speaker. It's a story about a fictional spacefaring society that is written in a way that's meant to be obtuse and indeterminate at first before resolving later on.
Everyone has an 'ors' or 'orsimonous' that is visible that lets you understand certain things about the other person; what that is is up to interpretation, but can include parts of their past, their current feelings, etc.
Your father's ors has disappeared.
It happened after a big natural disaster.
The intent of this piece is to discuss how that happened.
At least, that's what I think. The writing is very indirect, saying the same thing multiple times but never outright. It's possible there are many allusions I missed here (is the 'shock' a metaphor for something like Covid? Is the 'orsimonous' a term used in other works of French fiction). But I liked the way the choices were presented and the work made me feel contemplative.