There has been mention of making a DQA category for duplicates (see post; no clue if any progress has been made or if the idea was nixed). That being said, you shouldn’t misuse current DQA options (see post). I know you are asking about a different action, but it’s similar in nature.
From the community guidelines:
Duplicate observations. They’re not ideal, but they’re usually due to oversight or bugs. Politely ask people to remove them but if they don’t, it’s not a big deal unless it becomes a habit.