I'm not really sure why this comes as a surprise to anyone. All it indicates is that MS is in full-on bunker mentality. They've written off the gaming press as a loss.
It's basic PR 101: Control the message. And from their perspective it may actually be the strategy that makes the most sense.
No one can deny that the reveal was a PR clusterf*ck. They have to do E3, but they don't have to permit the risk of allowing executives to provide possibly off-script answers to a press that they've already alienated; one which will be hostile.
From their perspective, absolutely nothing good could come from this kind of press conference. They will never be able to provide satisfactory answers that will convince during this kind of event, even if everything they said were 100 percent factual.
What the escapist or destructoid or rock, paper, shotgun or gamespot, or kotaku thinks about MS at this point is irrelevant, because as MS sees it they've already lost them. As important as those outlets may be to hardcore gamers, a single well-crafted nation-wide advertising campaign will reach far more people than any gaming press ever will; all while allowing them to carefully shape and control the message.