Leaving aside the whole bit about female gamers (who may avoid places like GameFAQs, which are a hive or scum and villainy, but have no qualms about posting on the official forums of a game they play and enjoy), I would say the biggest problem with this article is that the thesis is "You need to ignore the hardcore players. Hardcore players are the ones who post on forums. Therefore, ignore anything said on your forums".
It doesn't matter how many posts there are on an issue, what tone they're presented in, or if they're backed up by statistics and FRAPS recordings. It's on the forums, so it's stuff you shouldn't listen to. You can make a box pop-up in-game during the beta test for people to write feedback in, but feel free to ignore what people write in there, too.
This basically kills any dialogue between the developers and the people using their product.
So what does the author propose to use instead? Focus groups.
Steve Krug has this to say about focus groups:
When the last-minute request is for a focus group, it's usually a sign that the request originated in Marketing. (...) As the launch date approaches, the Marketing people may feel that their only hope of sanity prevailing is to appeal to a higher authority: research. And the kind of research they know is focus groups.
(...) Focus groups can be great for determining what your audience wants, needs and likes - in the abstract. They're good for testing whether the idea behind the site makes sense and your value proposition is attractive. (...)
But they're not good for learning about whether your site works and how to improve it.
Now, granted, Steve Krug is a specialist on usability as applied to websites. But his idea of testing a website - take someone who's never seen it, sit them down and watch them try to muddle through - can very easily be applied to MMOs. You want to know if many thousands of people will be able to have fun playing your game? Get several thousand people and ask them to try and play your game.
Yes, there will always be the hardcore players, the malcontents, and the unpleasables. But not everyone on your forum is one of those. Some of them have valid points. Some of them have great ideas that you only *wish* you could come up with. Some of them have way too much time on their hands and will make you long, detailed reports with graphs and statistical analysis, for free.
Dismiss that sort of dedication to your game at your own peril.