Nah, I think it will be good. It will symbolize that they can't fully trust the Outcasts. This will also help Arthur push for the Anti-Meta Act, essentially making all metas criminals.
We saw Jack destroy a mile wide radius of forest back when his power was in it's early stages.
This was just a simple blast, like if Jack yawned and accidentally shot a beam.
He shot a devastating beam.At this point, explaining that he shot a beam at the White House would just be a waste of writing potential.