I love a redemption story as much as anyone. But there are certain necessary elements — remorse, concern for people who may have been hurt, an attempt to make amends, a change in behavior going forward. If those pieces are missing, it’s not a redemption arc. It’s a story of a stunted character trying to shirk responsibility.
Patricia Highsmith is the only author that immediately comes to mind who successfully made a character like this the main focus of her stories. Usually, a character of this nature would have a starring role only as an antagonist to the hero. And if said character gains power, that’s not evidence of redemption. That’s just upping the stakes.
Yes, these thoughts were prompted by current events.