The email also says "take user feedback [...] into account". So perhaps the automated system isn't that automated after all.
And frankly, I am not surprised if Facebook isn't comfortable having this app around. If someone finds an exploit, and a "who has a secret crush on who" database gets out, that's a pretty major PR-disaster for Facebook. Non tech-savy Average Joe won't care that it wasn't Facebook's fault.
All you have, as a FB app, are a bunch of UIDs though. Not impregnable security, but stealing that data still puts you a long way from being able to say "Joe as a secret crush on Jane".
And frankly, I am not surprised if Facebook isn't comfortable having this app around. If someone finds an exploit, and a "who has a secret crush on who" database gets out, that's a pretty major PR-disaster for Facebook. Non tech-savy Average Joe won't care that it wasn't Facebook's fault.