tbh, I think the problem is that people confuse “getting a redemption arc” with “being rewarded with what comes after a redemption arc”
like, redeemed villains are generally friends with the heroes. they get to experience love and The Power of Friendship for the first time, if they haven’t already. they generally get to experience forgiveness. if their motives are based off of some kind of trauma or pain (like a lot of redeemed villains) then they will probably have that resolved and get some sense of closure or inner peace from whatever is hurting them.
so when they say that “this character doesn’t deserve a redemption arc” what they mean is “this character doesn’t deserve to be loved. they don’t deserve happiness, peace, or companionship”. the alternatives I have seen are:
“I hope that this character realizes how awful they are and they kill themselves”
“I hope this character is redeemed by a heroic sacrifice” (meaning they would be redeemed but wouldn’t be alive to experience the “reward” afterwards)
“I hope this character begs and pleads for forgiveness over and over again, but is never forgiven”
it’s pretty disturbing tbh, to treat basic things that every human needs (like being loved) as a “reward” that you get for good behavior. or more accurately: never being bad in the first place. that once you fall from grace you’re damned for eternity.
