Earlier quoted context omitted.
"an honest assessment & making us part of the journey to overcome whatever adversity" I suspect that most people just aren't wired up that way - we have a natural tendency to want to follow leaders and what we seem to want most from leaders is certainty and confidence. Does it matter what leaders are certain and confident about - not really.
It is hard to argue with a vague statement like "most people" without a proper scientific study. But I disagree: following the scientific principle, and being willing to change opinion in the face of new evidence increases my trust in someone. Someone who is certain and confident without showing their work / sources make me suspicious. And critical thinking is (pardon the pun) a critical skill.
You've most likely trained yourself to value critical thinking in your leaders, most likely from an early enough age that you don't remember what it was like without it. Lots of people don't get this training or don't apply it in a fully general way.