Comment # 3 on bug 909962 from Neil Rickert

Just an observer's comment here.

Somebody who knows their system well enough will know what passphrase is
expected for 13.2.  On the other hand, someone who doesn't know their system
well enough will see the 12.3 "explanation" as gibberish.  So does it matter?

When I last tried Fedora and Mint, they both had similar lack of explanation
(just a box to type in the key).  Maybe "/etc/crypttab" needs a prompt="string"
option so that the explanation can be user provided.