User blog comment:Miskos3/Fairy Tail 539: World Destruction, Review/@comment-26184007-20170610204900/@comment-2214433-20170610225437

I highly doubt that is the case, I think the chapter was pretty clear about the fact that Acno made use of the time bullshit to transport all dragon slayers into it. Natsu's disappearance was also caused by that, but since Lucy has no way of knowing, she believes that it's because she failed to save Natsu through the book.

Plus, I'm fairly certain this is similar to Rave's final fight, so...