1. "the updates that you promise them" - Notch has never announced updates, and definately never 'promised' them before the upcoming Halloween update, which is scheduled for the 31st of October (take note, it is not yet the 31st of October). Ironically, it wouldn't surprise me if this was now delayed, due to this action.
2. "We have roughly 83,000 bots available" - Because, really, the best way to justify your views is to admit to a serious crime. I mean, if Ed Milliband came out tomorrow and gave a press conferance saying "Britain should adopt socialist policy because I KILLED A CHILD TODAY!", I know I'd support him.[/sarcasm, except the bit about me supporting Milliband, I don't like socialists, but if he did actually say that, he'd get my vote]
3. "we're not from roblox, or any other minecraft clone" - Anyone getting a feeling of that trope in the last paragraph (forget the name, don't want to look it up, because I know I'd be stuck on tvtropes for a few years), I mean, I'm pretty sure no one was ever thinking of that until they said it. It'd be like if Ed Milliband came out tomorrow and said "Britain should adopt socialist policy, and I've never slept with prostitutes despite knowing all six of them to be both significantly underage".
(He's the leader of the opposition, ok? He deserves to be mocked! It's like the law or something.)
Oh, and there's no proof this claim is even legitimate. From what I gather (without minecraft I have a lot of free time!), the attack was directed against the server that hosts minecraft.net, not necessary against minecraft.net. So it's more than likely this is just some troll pretending to be in control of the whole thing because... well... why do trolls do anything?