So this is as much about the messenger, perhaps more so, as it is about the message, yes?
i think the message is always more important than the messenger. however when the messages don't stand up to rigorous enquiry it brings the credibility of the messenger into question. if you are in a position where you have sufficient background knowledge to be able to critically evaluate the message then there is no problem. however many people here are not in that position and tend to trust the messenger so sometimes it is important to question the messenger, particularly when they repeatedly use an 'i just know i'm right' style of answer to important questions.
