The existence of a petition site is better than absolutely nothing. I'll even grant that a petition response isn't the right forum for addressing a personnel question. But like user 'btilly' says below, "The wording of the petition may have been very specific, but it still provides an opportunity to address the issue."

There are smart people at the White House and they understand the intent and emotional response behind the petition. To lean on the TOS to avoid a substantive response to issues raised by Aaron's case is callous disregard for the 60,000 people who signed.