Well, when I say it's a "re-boot", I meant that for a brand new player who jumped onto the game only from ARR, it doesn't directly matter whether you know the original storyline. From such a perspective, everything in the past would be no different from any other kind of backstory. ARR doesn't start with you, the player, specifically recalling your heroics from Ver1.0, and starting where you left off. You literally started over again, whether or not you're a legacy player (of course, a legacy player is completely free to role-play otherwise).

And that's also why I say returning non-player characters are a "nod" to legacy players, because it's only really them who would fully appreciate the reappearances.

In that sense, though, I'd say that a bit more effort could have been taken to discuss F'lhaminn's backstory in ARR. I may know her from uploaded videos from Ver1.0, but even as a "legacy" player, I don't actually know all that much about her and her "Ul'dahn clique".