A true leader takes hard questions and answers them live. Watch some footage of Steve Jobs taking hard questions (yes, I know Steve Jobs had some real issues, because we have to mention that, but I cite him because he is one of the great leaders in the tech space).
When Fauci went in front of the media and dodged and weaved he didn't build trust, he made people question.
If you're ever in a situation where a leader is dodging hard questions that's a big tell. Take note of it.