Actually, outside of the Sylvanas or Garrosh Fanboys who are a vocal minority, nobody is enjoying that. Most Horde players are annoyed because their faction ends up being the villains, having their leaders removed and feeling like they have to buckle to the Alliance in the end while the Alliance players are annoyed that the Horde is allowed to destroy their faction further and further without any sense of retaliation or satisfying victories, because in the end they just have to forget and forgive all the crimes the Horde forgot when the strawman is removed and the Horde promises to be better.
So nobody ends up being happy and everyone is annoyed.