To the contrary, I really appreciate when someone who owns a product can provide us with an objective viewpoint. With many of the threads here on Head-Fi, people often quickly recommend a product that they own. However, having the chance to read about experiences as well as good points vs. bad points of a product such as a headphone is what I love to read in a post.
If a post on a product is all sugar coated with not really an objective viewpoint or even the owner pointing out a few of the flaws, I don't put much credibility into that posting. All of us hear differently. All of us listen to different varieties of music and have different uses. We're not always going to have the most favorable view of a product just because 3 or 4 other members love the product.
That is all.
Let the Grado discussions continue ...