networkn:To be convicted of a crime, the case should be entirely made up of the evidence related to this and only this crime.
Yup, and that's why you suppress beforehand but name afterwards. If they're a serial offender, as this guy was, you want to create the opportunity for other crimes he's committed to be identified. It's nothing to do with revenge or titillation or whatever as someone else has said, it's to allow other victims to come forward and previously undiscovered crimes to be identified.