It can be fairly said that the Zandalari have endured for many thousands of years, and that in all that time, much of their history has been forgotten.
If you've played Horde this expansion, then you've gotten a real in-depth look at the Prophet Zul.
One of the things we say a lot is "in beta, everything is subject to change" and that's because this happens every beta.
The most recent Battle for Azeroth alpha builds began to include data for the upcoming Uldir raid -- including broadcast text and dialogue.
If you're wondering who attacked whom first, the new datamined spoilers for the Zandalar recruitment storyline found by the folks at Wowhead may just solve that for you.