Right. Same goes for VentureBeat, TechCrunch and every other major web publication out there that solicits guest posts. And not all of them are of great quality, either. Many come across as nothing more than thinly veiled advertisements that wouldn't look out of place on Ezinearticles or somewhere similar.
I understand what Matt's getting it with this decree but it's very hard to selectively enforce this in a way that doesn't come off as favoritism towards big brands.