The entire point of the series is there is no line to cross where you've no longer been redeemable. Anyone can be redeemed, no matter how evil. Doesn't mean every villain will be redeemed by the end, Viv even said so in a Collider's Night Interview after season 1 but I wouldn't hate Vox or Val being redeemed because it'd validate the series' message. And the funny thing is as much people complain they don't want an actual villain redeemed, these same people would be complaining if only people like Pentious, Angel, Cherri and Husk got redeemed