That doesnt mean “of course jins story is forgotten” it just means it isnt the primary focus of this game’s narrative. Flashbacks, written text & stories that survive to the current game are just two ways they could easily tie the two stories together.
What is with the most evil fuckin corps taking names from Tolkien for their shitty companies. Lookin at you palantir you fucks don’t even pronounce it right. Creepy shitheels