I've read testimony from offenders that chemical castration helps if they genuinely want to stop offending. It reduces the drive. However I've read one who said that it was only actual castration that really gave him peace.
I just don't know. Afaik paedophiles cannot be cured, they are at best like alcoholics taking it one day at a time. But really in our society it must be like being an alcoholic living in a pub. Almost impossible, almost unbearable.
I think they should be offered an island, not a harsh environment, but a controlled one where they can live freely. Work for a living, learn skills, associate as they will, communicate as they will. But never leave. keep to the Fen Causeway
/snark ~"When an inner situation is not made conscious, it appears outside as fate." Karl Jung~