Okay, Superman personally vouching for Luthor because he believes Lex can be a better man is very on brand, but the idea that Luthor would even be up for parole this early is ridiculous.
I'm going to stick with my head canon that Lex pulled a lot of legal stunts to reduce his criminal charges in addition blackmailing the judge into giving him early parole when sentencing him. Lex had pictures of the judge being spanked by a dominatrix in a Nixon mask at a late 70s sex party.
I'll be waiting for my No-Prize in the mail, Venditti