Eh, still, I can't say that reviewers haven't yelled before thinking is a new thing. I've seen this time and time again, often with varied results. Sometimes people can get away with it and have, and others haven't.
And I could argue that some of it could very much be accentuating the negative; something that most reviewers like him do (hell, Yahtzee thrives in this). Of course he's going to act pissed, it's in his name for Christ's sake.
Now, looking at the situation at hand, do I think he screwed up big time? Yes. Do I think he gave the game justice? No. But I'd be lying if I said I'm all up in arms about this. Because to be honest, at the end of the day it's a video. Granted, one that will be preached to death by a bunch of blind sheep, but not much else afterwards.
The only thing I can hope from this is that he learns his lesson of not jumping the gun and everyone moves on. But apart from that I couldn't care less.