And why should "unamed GameStop employee" not be a credible source exactly?
The people saw the game. Why shouldn't they be credible?
Even if this source came from a verified reddit account (it didn't), impressions from a random person who watched a presentation is not a good source, and it's equally ridiculous to spawn an article off of it unless you're whole point is to generate clicks and engagement (arguments). It's pretty obvious that the the intention of the person who wrote it was grasping for straws with this whole "game stop employee" thing, and they would have been better off just aggregating random impressions from people in attendance instead of using a well-known logical fallacy (appeal from authority) to try to give the article more credibility.
I don't even care about Red Dead Redemption, and I never even played the first game. But I felt compelled to respond to this thread given the hyperbolic defenses that people are coming up with to defend a bad article.