It could be something along the lines of that us legacy players were never actually there doing the 1.0 stuff we physically did, lore-wise. False memories is a cliche strong enough for this game.
Everything we thought we did. Our accomplishments. Our awards. All fake! Something happened to the real hero and the world needed their replacement.

Now we'll meet the original warriors that we're trying to be, unknowingly so.

That or it's just our lovable derplander! :3