With regards to this... they probably have the capability to identify many individuals as long as they meet them in small groups.
For example, during chat when hunting they can recognise "Alice's husband Marisa", "Great Hunter Marisa", "Scarface Marisa", "Marisa living in the tree closest to the river", etc. But they lost the capacity to identify when they must process large group at once, it's always become "us" or "them".
With regards to this... they probably have the capability to identify many individuals as long as they meet them in small groups.
For example, during chat when hunting they can recognise "Alice's husband Marisa", "Great Hunter Marisa", "Scarface Marisa", "Marisa living in the tree closest to the river", etc. But they lost the capacity to identify when they must process large group at once, it's always become "us" or "them".
Interesting theory.
In general, yukkuri have low intelligence and they can't remember many things. But seeing it from opposite side, they can clearly remember things that are less. In the smallest family composition, there are things they won't forget.