(I do in general tend to have more pessimistic beliefs than average, which at least on average happens to be on the right side of the bias. I also don't hesitate suspecting that people don't know what they are thinking or doing and why, even if they explicitly describe what they think they think. And I'm more willing than usual to risk offending people to their face, where I believe I can get away with it. So I'll point out if I think something is wrong, where many people would prefer to change the topic or agree politely, for the flaw might be small and the tradeoff between keeping the flaw intact and being impolite is ruled against the improvement. This could account for much of the difference in impression from my comments and others' comments.)