That’s actually a more… unimportant(?) “plot hole” when you look at the show through what it tries to accomplish. It tries to show that redemption is possible know matter who you are (at least that is a major theme) by placing the show in hell, where the worst, most awful people go, and watching them find love, friendship, and a place to belong where there isn’t a cock or a Glock in their face, you can truly see the impact of their redemption. I like to say, “what sounds more memorable, an angry mother apologizing to her kid for yelling, or a now sober alcoholic mom apologizing to her kid for beating the shit out of them for years?”