The thing about this quote is that it makes Blizzard sound pathetic, and here's why: Their forums are a cesspool. I've played 8 MMORPGs and contributed to dozens of online communities (starting with 300 baud dialup chat/BBS, over 20 yrs ago); the WoW forums are almost the most toxic I've ever seen (the only worse community I've seen was AoC forums, post-launch). The WoW forums are the absolute last place I'd look for meaningful feedback. They're implicitly admitting that's their source of the Cataclysm decision-making process when they could have hired hundreds of people to collect meaningful feedback in ways that would've guaranteed a better game direction.
It took them six years to figure out that neck-bearded mouth-breathing basement-dwelling trust-fund-kiddie Mongos on the official WoW forums don't represent a majority of their community. I bet if you datamined the forums you'd find less than 5% of characters have ever posted there.
Now they're following the same Path of the Forum Mongo to make WoD dungeons "more challenging", blocking flying mounts, etc.
Face, meet wall.