Certain posters never would have known about this if it hadn't been posted here because they're not planning to buy the game anyway. I think Mike is trying to entice a few of those skeptics. That's very different from posting a spoiler for Twighlight Princess, which 80% of us are guaranteed to buy. I don't like spoilers either, but this is a pretty piddly one for a game that a lot of people didn't care about anyway.
And yeah, this is a totally immature article.