Well, it had to come from somewhere. But if that leak happened to be getting waterboarded by our freedom-loving allies in Khazakstan rather than a face and a name, it'd be easier to, um, keep quiet.
That is kind of my point. We know his name, but we always knew there was a person behind it. Snowdon could be captured and sent to some undisclosed location (or killed or your favorite theory, after all it isn't like we expect to hear from him in the public), or an anonymous whistleblower could have been captured and sent to some undisclosed location (or killed or your favorite theory). Having a name out there doesn't change the equation much while distracting from the contents of the leak.