This Columbia Journamlism Review piece (apologies if it was posted already, I lose track sometimes between here and Twitter) suggests that Riversco is correct in one way. The goal of right wing media is to destroy mainstream media's credibility. Their reporters, their investigations, their "facts" all have to be blown up so that the alt-right viewpoint gets equality of presentation without having to do any of the actual work of establishing credibility.
The goal is, and always has been, a re-establishment of a political and cultural order of a time gone bye. If that means pulling NBC's "license" to make a point to all the rest of the opponents, then there will be no outcry from the right.