No shes not joking, read some patch notes, read some blue comments and you would also know that.
Also we dont need to play PvP to know that - its just a fact. Blizzard decided to leave cataclysm project and instead of that they changed Blood Fear.
I dont see where Jessica wrote that its a good or bad change, i dont see if shes making her opinion about this at all.
So it doesnt matter if its good or not, if ppl would take it or not - you have 2 options right now:
1) you can still beeing confused and crying on forum whats happend with cataclysm over and over and over again
2) or you can just read what Jessica wrote.