If you read through the comments after the story you'll see that he was part of the original Xbox team but then left MS. He gives a lot of personal details there and wouldn't be that hard to identify. In fact, he's not really trying to hide his identity.
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My Sony PSP, with firmware 5.02, uses WPA2 Personal just fine. The NetFront browser is not bad at all.
If you read through the comments after the story you'll see that he was part of the original Xbox team but then left MS. He gives a lot of personal details there and wouldn't be that hard to identify. In fact, he's not really trying to hide his identity.