It's not just kids, but how most bad people react when anyone confronts them about their false beliefs, inadequacies, sins, or hypocrisies. They immediately become vitriolic and confrontational, lashing out at the person who told them the truth, as if they were physically assaulted. This is usually why having a good debate (logical, honest, civil, and prioritizing truth above all else) with someone who holds a false belief is nearly impossible, because people cling to those beliefs like an anchor, often doubling down on their own stupidity. I wish it wasn't so, but it's been the lion's share of my experience on the subject, personally having debates and observing others debate.

However, you are correct that for someone to react that way toward a kid, speaks less favorably toward that person, and highlights further their defensiveness of their sins.

Dan Crenshaw is an Israel first, America last "conservative". He's a judeo-Christian, meaning he's not a Christian.