I'm not quite sure why these stories keep coming up, given the vast amount of literature available describing why and how contracting, with it's bifurcated pay and benefits systems, can and is mutually beneficial to the organizations.
In fact the #1 thread, as of this writing, is about freelancing and has dozens of comments from freelancers.
One possible explanation for the frequency of the topic, is that it's not the structure of contracting that people are rejecting, but rather the wide disparity between the size, pay and benefits of the contractor vs the contractee. Nobody complains if Bain takes a contract with Apple, as both have good pay and benefits. Similarly nobody complains about the freelancer working for [megacorp] because the freelancer is independent and an owner. However, increase the wealth gap between the companies and now you have a story.