I'd say it's worse if you make an unsubstantiated statement that goes with the common wisdom than when you go against it. At least when a comment goes against c

I'd say it's worse if you make an unsubstantiated statement that goes with the common wisdom than when you go against it. At least when a comment goes against common wisdom, substantiated or otherwise, it can spark interesting discussion. A rehash of commonly held beliefs generally doesn't spark anything that interesting and amounts to little more than noise.