I read this when it was making the rounds a few weeks ago, and I've got to say that I completely disagree with this guy.
Too many creators are delicate flowers who cannot handle criticism of their material, and thus shut themselves off from all feedback. It takes practice to roll with the antagonistic BS and sift through the discussion for the nuggets of gold, but if you're any good at your job you're going to find some affirmation in the comments as well as the insults and misguided suggestions.
You're also going to discover why your products don't work for everyone, which is useful information when putting together the next one. Sure, you might choose to ignore that information, but it gives you an opportunity to address your product's perceived flaws and decide if you want to do anything about them.
I don't think building a wall between creators and customers is the way to build a successful company in the era of Facebook, Twitter, and (heck!) EN World. All it does is give the impression that you are aloof, uncaring, and too delicate to handle criticism.
Which, come to think of it, is often the case.
Basically I think creators need thicker skin and need to realize that they are doing what they are doing as part of a business.
A smart business listens to its customers.
Period.
--Erik