Getting back to the issue of why the New Warriors are getting the blame for this and not necessarily a bad thing. It's much more appropriate for this story. Simply put, the New Warriors fucked up big time. But it wasn't that they fucked up trying to do good. They fucked up while trying to film there TV show.
They fucked up trying to get TV ratings up, not for the purpose of doing good. This falls into the whole J. Johan Jameson "super heroes are a public menace" rhetoric that they've been doing forever. They are even doing a "newspaper" style issue of The Pulse like they did for House of M, which will propably be filled with slanted anti-independent hero stuff.
Marvel couldn't do the Dr. Light/Debate angle, as they kinda did that at the beginning of House of M when the Avengers and X-Men got together.