HardOCP published a couple of articles detailing how the CEO of Infinium was involved in numerous other pie-in-the-sky companies that very quickly tanked after taking in millions from investors.
They also investigated Infinium, and found that the headquarters for the company was totally empty office spaces in buildings and strip malls. The whole thing was built on a house of cards.
It was a pretty rare example great investigative game journalism, in a field where most magazines and websites are nothing but the pawns of publishers and hardware manufacturers.
In retaliation to the whole story, Infinium is suing them.
So when they smash up a Phantom prototype, it's not some fanboy-ish "haha we hate this system" thing, but cathartic agression towards some assholes that want to fuck them over for exposing the smoke-and-mirrors. They have a lot of people on their forums rooting for them (as well they should), so that's where the "w00t w00t" stuff comes from.
The destroyed console is in some ways a continuation of their expose -- they are more-or-less proving that the Phantom is just a PC with an ugly case, underscoring the idea that the whole thing is just some ramshackle fly-by-night operation without any real thought put into it.