[0xFluegel]

> … the vast majority of right leaning sources (aside from fox) are effectively blacklisted.

This reminds me of a past blog post, a few weeks ago or so, from a journalist who spoke about how strongly right leaning "journalists" often think of their writing as political influencing and counter-acting the left journalism.

I don't know how true that really is but such a tendency could be a good faith explanation for such a rule (as long as it has exceptions).