No social news site is going to be perfect. If it's people that are writing comments, some comments will be good and some will be bad. Read them and decide for yourself. If a comment hurts your feelings, get over it. If you like a comment, upvote it, and help other people find the best comments.
Really, I kind of get tired of reading stuff like this because there is always some subtext to it. "mean-spirited" usually means, "someone disagreed with me". If people disagree with you, you can either get over it or learn to argue better. Passive aggressive, "oh noes everyone is so mean" is not going to change what people think. Good writing will.