After reading the comments the author chose to highlight, I came to the conclusion that these people were mostly referencing fundamentalist Christians. Many fundamentalists find great joy in the notion that their lives and tactics are odious to unbelievers. How do you (the non-fundamentalist) have a discussion with someone who feels that way? – You don’t.
I found this comment to be incredibly insightful:
“The main thing that baffles and angers me about Christians is how they can understand so little about human nature that when, in their fervor to convert another person, they tell that person (as they inevitably do, in one way or another), ‘You’re bad, and wrong, and evil,’ they actually expect that person to agree with them. It pretty much guarantees that virtually the only people Christians can ever realistically hope to convert are those with tragically low self-esteem.”– E.S., Denver