This is a really interesting question. In my opinion, absolutely yes. It's a piece of someone's hobby, a passion large or small. A time capsule of things that made someone happy.
Beyond that, in cases like the authors friends love of Sea of Thieves, it can show a bit of the community they sought, the people they interacted with. A small tendril of ourselves, reaching out and entwining with others.
And, for those who maybe only knew the person online, never had the chance or want for an in-person meetup, it's a place to mourn. A digital marker of a life once lived, a finished book of memories. The games themselves may come and go, but the traces they left will be there, captured in achievements and screenshots, to be shared as long as a copy exists.
