I wish we went deeper into the debate about the extermination cause in someways I think it's justified but it's also mostly fucked up.
Think about it. Hell really could use Exterminations if done right. And I'm not saying this as a supporter of the yearly Genocide. No.
What I'm saying is that Hell, while still hell at the end of the day, is infested with various people that have abused the power system and have actually prospered in Hell rather then suffered. Hell is supposed to be a place of eternal punishment and the way I think the story shows that is by having it be an echochamber and cesspool of rancid and deplorable people. You can't end up in hell in this world and be fine and dandy because now you're stuck with people who are just as bad as you, if not WORSE.
They all tear into eachother and fester, creating a place well deserving of the title "Hell." The only reason there's some good in hell is because of the small pockets of humanity that shine through in a few exceptions of Sinners. Angel Dust, Rosie, Husk, & most importantly Sir Pentious are all undeniably horrible people, but it's their comradery and exceptional humanity that make us root for their change. Hell, we see exactly that when Sir Pentious gets redeemed. He was a wannabe overlord who tore down legions to rule over hell but had the compassion to be softened into the heroic goofball he is today. And he gladly threw his pride away if it meant he got the love and recognition he thought he deserved.
In a way, that small ray of hope in Sinners is exactly way Charlie is justified in her Dream. Because dispite the cesspool nature of hell, there are still those who cling on to their good natures.
However, I belelive Adam is also justified in bringing the Exterminations to hell. Like I said, Hell is a cesspool of disgusting people who have done horrible things. However that alone is not enough to justify the Exterminations. In the show, the reason the Exterminations were green lit is because of a fear of hell uprising. This reason seems pretty baseless due to the lack of evidence given by the characters, however there actually is real evidence to support this paranoia.
Overlords.
As alluded to before, Overlords are the sole exception to the punishment of hell. Instead of being another insect in the nest of hell, Overlords are actually awarded for their atrocities. They own souls, own parts of hell, have magic powers, and most importantly of all, they actually prosper off the rancid actions of other Sinners. The more sin people do in the pride ring, the more powerful and influential the Overlords get. The Overlords alone are reason enough to hold Exterminations annually, as they support the hypothesis of Sinners being able to create an uprise.
While some would argue that the Overlords don't actually have a way to Heaven in the 1st place, their exponential growth in power and magic would be enough to not even entertain the chances. This is why I think this is the most justified reason for the Exterminations.
But I also believe this is also the most justified reason against the Exterminations. Think about it even more. Did anything I mention above about the Overlords get brought up by Sera or Adam? NO! Not once did they bring up the Overlords and how they can be seen as genuine potential threats to Heaven. Sera only said there was a fear of an Upriseing while never giving her reasoning for it and Adam only saw the Exterminations as a game. Sera nor Adam never gave a critical thought behind the Exterminations. They did it out of rashness not reason. This is most evendent in how Adam treated the Exterminations.
Like I said before, Adam treated it like a game, but I'd also like to mention that the way he handled them was in the most immature and sloppy way possible. Remember how I mentioned Overlords are genuine threats and that it is completely justified for the Exterminators to target them? Not once is it mentioned or even implied that Overlords were ever targeted specifically. It wasn't until Alastor stepped right up and got molly wopped that we see or hear of an Exterminator striking down an overlord. And that's not even the end of it. The way Adam kills off Sinners is also reckless as shit. You honest to god expect me to believe a Sinner child is so important to kill, you felt it necessary to MUTILATE a commanding officer and BANISH her in hell!? Absolutely not! This not only furthers the notion of Adam not caring about who he kills, it also tells us something more important. The value of a Sinner child had the same value as every other degenerate scumbag that just so happens to be a Sinner. Let that sink in.
To the Exterminators, a cannible Sinner child has the same value as an adult rapist, murderer, drug dealer, and arsonist. Jesus fucking christ.
And last but certainly not least, the most immature, reckless, and thoughtless thing Adam did with the Exterminations was leaving holy wepons in hell. This rotund fuck gave so little of a shit about his job and thought so little of sinners, him and his goons intentionally left the only things that could kill them in the home Turf of their enemies.
If the Overlords weren't enough of a reason to think about a potential uprise, them having access to Holy Wepons will definitely do the trick. AND IT'S ALL HIS FAULT! IT'S ALL ADAMS FAULT!
Just like how Charlie's dream of redemption in Sinners holds justifiable weight, but gets bogged down due to her flaws of naivety and tunnel vision, Adam and his Exterminations are the same. Adam genuinely has justifiable reasons to exterminate Sinners, but not only does he do it for the worst reason conceptually possible, he did it in such a way that not only did it not help at all, HE MADE EVERYTHING SO MUCH WORSE!
I think the worst part about all of this, is that we never got any of this in the show. We never got to see Charlie and Adams ambitious clash beyond the bare minimum. And I 100% DO NOT blame Vivziepop for that. I blame Amazon for neutering this show to an 8 episode season.
So at the end of the day, what did we learn? FUCK YOU AMAZON!