Reporting Defaults

Most of the Facebook users interested in child pornography take it somewhere else or use private groups.  However, one will occasionally post some horrendous stuff to an open wall where anyone can see it.  Recently, I came across this and reported it to Facebook.  Here's what the reporting interface looks like.    We select the "nudity or pornography" category.

Here's what's a little worrisome.  Bear in mind that we're trying to report child pornography.  So why is the default option set to just block the user and not report it to Facebook?