It's hard to say really
Whenever I was in the scene, I've had people walk up to me and talk about the strange spires / towers that had formed during late shadowbringers MSQ
This was when it was current and it wasn't entirely clear what they were or what their purpose was

It doesn't help that the game itself doesn't seem to have a very cohesive timeline
After the fall of Dalamud it's been I believe 5 years, and after that it's left up to player interpretation / up to a year or so due to the twin's age being roughly the same