Tell me about it. That article's got the grumpy old man RPG sites all up in arms. The funny thing is, the guy's got remarkably few of his facts straight for somebody that seems to see himself as a "nerd's nerd." He just fellates GURPS a whole bunch. I give it a "meh minus".
Read the comments on the Slate article - some are pretty lulzy. One guy gives Sofge a 3 Int.
Apparently he's also the author of such enlightened pieces as "Tesla was a hack" and "The Declaration of Independance was a piece of shit." So, you know, he's edgy and alternative.