I still have no idea what BENGHAZI! is about, but I guess this summary is as good as any. Sure, it's nonsensical (Obama never "lied") and makes no sense (the White House and the State Department coordinated the messaging after the attack, not the other way around).
But really, when it comes down to it, it's a scandal because, because they said so, that's why. Also, Americans died!*
*Unlike on 9/11, in Iraq, during Hurricane Katrina, or any of those embassy attacks that occurred under Bush.