For the love of everything that is good and evil, I wish people would stop trying to use this as an argument point,
Genn and Rogers never bring up the journal,
The journal wasn’t clear about what was happening,
The horde and Alliance can obtain the Journal,
Genn and others outright say they have no idea what the Blight is going on until they’re about 5 minutes from finding out by the end of the questing zone.