You say lowered, I say writing in such a way that communicates what the author actually intends to communicate. If what you're trying to say doesn't land among your intended audience that's a you problem.
Having read the book and seen the movie adaptation I have to disagree. Alex is charismatic, popular, a feared leader, independent, and rebellious. The brutal rape scene while singing makes him look like an absolute badass (a la the Joker) existing well beyond the reach of society's rules and importantly, makes him look powerful. Ultraviolence sounds like an achievement in DOOM. When he's caught it's framed as a betrayal not "we finally got the bad guy." Then they make him sympathetic through the torture and weakening him and making him unable to defend himself to the point of being driven to suicide. It's harrowing, not the cathartic comeuppance of a terrible man. And then the police apologize, let him go and arrest the man he brutally beat to near death.
The narrative considers Alex to be horrible but the view as seen by the camera/reader thinks he's hot shit and a tragic victim of a dystopian society.
As another example, when you watch Dexter you're rooting for Dexter and the show makes him cool despite him ya know being a killer.
In a lot of ways I think it's actually a hallmark of media literacy that readers/viewers largely ignore the narrative as a source of moral judgment because it's fiction and we like compelling villains and instead finds it in how the characters are actually portrayed.
