What situation do you think dang would need to edit a comment that a deletion wouldn't work? HN isn't partnering with the CIA to catch some Russian spy by modi

What situation do you think dang would need to edit a comment that a deletion wouldn't work? HN isn't partnering with the CIA to catch some Russian spy by modifying a comment so that the drop is in a monitored location. He's just going to delete the comment if it contains something it shouldn't.