I admit, I’m less inclined to pillory somebody who says “I don’t know the answer to that“ then I am to denigrate someone who professes to be an expert on everything.
I despise wonks who think they can grasp all aspects of some issue or another, and base policy on that. Clinton and Obama are just two examples.
I am far more inclined to respect someone who sees nothing wrong with delegating expertise to others, who actually have it.
But as you rightly imply, a person involved in driving or creating policy needs to have at least some familiarity with certain issues.
RFK Jr is going to look like a genius compared with Biden and Trump. You can argue certain positions but even Trump has acknowledged his intelligence and said good things about Kennedy.
One simple question Kirk asked, that I think would reflect the quality of a candidate: “Which Supreme Court Justice do you admire the most?” Easy-peasy. He gagged tapdanced for a while, wheels turning in his head, and when he realized CK wasn’t going to move on, he came out with “Earl Warren”.
The other questions he couldn’t answer were basic, and didn’t require a deep dive into all — even many — aspects of an issue. My home-schooled high school nephews could answer these in a heartbeat, and be prepared to explain.