On the one hand:

Demand Media seek to produce huge amounts of content that is just good enough to be the most relevant content for any given long-tail search term.

On the other hand:

If you know how to form a search query then you can find better content most of the time...

Which is it, is Demand Media the most relevant content, or is there better content? If there's better content, then Google is failing users.

I'm pretty sure that there is better content corresponding to every single piece of information that a Demand writer has ever posted online.