I agree, but the fantastic thing is that you lose so little when you reject too hastily. If the ideas you ignored turn out to be useful and true, someone you're willing to listen to will advocate them eventually.
That works if you assiduously and diligently and without flaw, start paying attention after no more than the third time you hear the idea advocated, and without using the idea itself to judge untrustworthy those who otherwise see competent.
In practice, people usually reject the idea itself and go on rejecting it, when they claim to be acting under cover of rejecting people. Consider those who die of rejecting cryonics; consider what policy they would have to follow in order to not do that. What good is it to quickly reject bad ideas if you quickly reject...
Tyler Cowen argues in a TED talk (~15 min) that stories pervade our mental lives. He thinks they are a major source of cognitive biases and, on the margin, we should be more suspicious of them - especially simple stories. Here's an interesting quote about the meta-level: