The title 'matthew stadler the sex offender novel' gives the impression of a work that is centered around a very negative and immoral character. While some works might try to explore redemption or the consequences of such actions, it's still a very difficult topic to find positive messages in. It's important to note that literature has the power to shape our views, and such a topic should be handled with great care and sensitivity.
It's highly unlikely. A title that involves a sex offender typically implies a dark and negative narrative that is not associated with positive messages.
Given the title, it's hard to imagine there being a positive message. Novels about sex offenders usually deal with immoral and often criminal behavior, which is not something that can be spun into a positive light easily. It may be a cautionary tale at best, but still a very disturbing one.