I custom-flagged a question by a user asking why their Stack Overflow account had been deleted. It was receiving "only applicable to one specific site" closevotes and seemed like a legitimate question - fairly specific, not whiny, not a rant, etc., but a genuine attempt to find out what had happened, so it seemed to be a reasonable candidate for migration.
The flag was declined:
This post is about the OP's Stack Overflow account, and so belongs on Meta Stack Overflow. Could you please migrate it there? – Robert Columbia 16 hours ago declined - flags should only be used to make moderators aware of content that requires their intervention
What specifically was bad about my flag? It occurred to me that maybe the moderator in question is trying to hint that I should have voted to migrate the question, but there are no user-accessible migration paths from MSE, so migration necessarily requires the intervention of a moderator.