I've flagged this answer as not an answer and my flag was rejected. Why?
I think that answer was posted as a joke, and it did not attempt to answer the question.
Update for those who can't see deleted posts:
Question: Are M-disks truly more reliable than other forms of storage?
not an answer
but later discovered it in my history with the following narrative:declined - a moderator reviewed your flag, but found no evidence to support it
. Needless to say, I was very surprised!