Basically, what it says on the tin. The mainstream-physics closure dialog, which is accessible on the closure dialog as well as on closed questions (example), contains a link to the mainstream-physics site policy which contains the user ID of one of the elected site moderators, i.e. the same link that comes from the 'share' button on that meta thread.
Now, I don't think it's the end of the world, beyond a somewhat-shady Announcer badge, but now that we know it's there, wouldn't it be better to remove that numerical tagline? Can this be done on a relatively painless fashion?