Using linked duplicates does not reduce poly count I am trying to optimize my scene, in terms of memory.
I figured I could use linked duplicates for things like chairs and tables that are the exact replicas.
But I when I turn on scene stats on display, I see face count still go up even after duplicating linked, it is like I duplicated it the typical standard way.
Facecount of linked duplicates only concerns base mesh faces.
If a linked duplicate has modifiers (like Subdivision surface), the facecount still goes up.
To keep facecount down even with modifiers, use Collection Instances instead.