[When] most people say [that] you shouldn’t judge, they mean that you shouldn’t judge things negatively. In other words, if you say “Fred did great in class,” [you won’t hear people say] “don’t judge!”
Whenever somebody commits a crime, it was their bad upbringing; but if someone is rewarded, nobody says: “he doesn’t deserve it, he was brought up well.”
I’m suspicious of the “don’t be judgmental” [response] because I think it’s a kind of “don’t say things I find unpleasant” [comment]—which is really not a moral argument.
— Francis Beckwith, from Can We be Good Without God? at 1:38:20