Testing Epistemic Closure

Conor notes this statement by Mark Steyn:

The media's attitude to "honor killings" is not only shameful and
dishonors the dead; it's also part of the reason why America's
newspapers are sliding off the cliff: Their silence on this issue is
merely an especially ugly manifestation of how their news instincts have
been castrated by political correctness.

Thus is reproduced as fact at the Corner, the way Newsweek uses a campaign book like Going Rogue as self-evidently part of the historical...