In this question a user both marked as duplicate and answered.
The reasoning was users will not need to navigate to the duplicate.
My opinion is the target duplicate should be the master. People should navigate to the master. If there is an answer to add then add it to the master. By not answering the master the master is diluted.
Users that find the master directly have no way to know other questions have answers.
There was already a comment don't lubricate. I suspected there was duplicate so I did not post as an answer.