Did the devs explicitly mention that BLU can't raid?

[Deceptus]

Which mobs use level 5 death and how Do you form a full alliance of 23 people Outside of the duty finder?

Pretty sure The Page 64 enemy in gubal library uses lvl 5 death.

https://www.reddit.com/r/ffxiv/comme...level_5_death/

Now whether or not a lvl 50 can go in there is a different story.