These discussions and the criticisms are VERY important. If someone posts good photos, and asks for a critique, I for one believe that it would be nice to take a few moments and do so.
That time spent "telling someone what they don't want to hear" may save years of bad breeding, misrepresentation as pure when not, and will help others find good stock by learning what a chick is supposed to look like, what a juvenile is supposed to look like, and what mature adults are supposed to look like.
Simply saying yours are not good and mine are good isn't helpful to someone new to the breed.
I participate in the discussion led by Kevin Porter on turkeys. Kevin, Dana Manchester, and a couple others are experts on turkey genetics. That they are willing to donate their time and efforts to helping others improve their stock and understand the genetics is very much appreciated.