Surprised to see the amount of vitrol on that page for Belgian beers from the author. Sure the "lambics" aren't really true lambics and some of the beers are sweeter than I'd find ideal, but yow.
He is unusually harsh (he generally is better at playing slightly biased journalist), but I think I understand his frustration. There are some amazing beers and brewers in Belgium that will most likely be (and frequently are) overlooked and overshadowed by the mainstream crap that isn't the best representation of Belgian beer. I personally tend to lean toward what "Darin" said in the blog comments and what theantipunk said here. But, what good is having a blog if you can't rant once-in-a-while?
As an aside, if you ever find yourself in Brussels for a few days, Around Brussels in 80 Beers is an excellent guide (though, unfortunately, already slightly outdated).