Naked liberalism makes even liberals uncomfortable. It's why they get uncomfortable hearing the self-righteous voices on NPR. It's too much like looking into a mirror and the things in the mirror are surprisingly unsettling. Hearing a Keith Olbermann or Jon Stewart tear into Republicans was one thing. Opposition is always safe ground. It's when the talk begins to turn to what you stand for that things begin to fall apart.
Newsweek and MSNBC had made the mistake of going "Full Liberal" and not only is there a much smaller liberal audience, but that audience doesn't really like naked liberalism. It would rather see its agenda dressed up in mainstream colors than see it for what it really is.
What media liberals fear most isn't the right, it's being exposed as the left.
U/T: Captain Capitalism