You just clearly said people couldn't download the game. Seems to me you are the only confused person here.
Bad info spreads to everyone that are unaware/misinformed. The more threads are made about this the more threads that actually have the correct info get shafted to the bottom and people are misinformed.
The only way you can check to my understanding and what I've read on this forum is that if your client has a blacked out play button with the early access/or launch of game on top of it you're good to go.
This is true!! I just tested it. I'm not pre-ordering my game till tomorrow so have no early access at the moment. Once I logged in with the client I got sent to a new page saying:
No valid or active service account is available to play Final Fantasy XIV: A Realm Reborn.
Then proceeds to give you the link to register your code at the Mog Station.