This is a valid consideration, however, one could argue that if we were to give victims the option to opt out of the specific consequence that might have been crucial in preventing future wrongdoings by the same person or other people, then perpetrators would think they can still carry on with their behavior. Especially if the victim decides to opt the perpetrator out of all serious consequences. It also could be the case that victims that are affected by what happened to them psychologically might not be able to make an informed judgment of consequences at that very moment, as we know everyone has their own time frame of processing the wrongdoing that was done to them.
This is a valid consideration, however, one could argue that if we were to give victims the option to opt out of the specific consequence that might have been crucial in preventing future wrongdoings by the same person or other people, then perpetrators would think they can still carry on with their behavior. Especially if the victim decides to opt the perpetrator out of all serious consequences. It also could be the case that victims that are affected by what happened to them psychologically might not be able to make an informed judgment of consequences at that very moment, as we know everyone has their own time frame of processing the wrongdoing that was done to them.