I sure hope they are. We need all the logic and reason we can get in the media, even if it's coming from a decidedly liberal source.
I disagree that religion is necessary for liberty to exist, in fact I believe the exact opposite. Religion is government. It was the precursor to everything we despise. Religion has been instrumental in the formation of virtually every totalitarian government in human history. Just recently north korea, radical Islamic states, nazi germany, all used the persuasive power of religion to enable their causes. It is, by it's very nature, collectivist. It promotes emotion and "faith" (i.e. belief without reason) over logic and objective reasoning. This is why quite a few libertarians are atheist.
I honestly believe that our republic was formed out of disgust for religious institutions and their dictatorial powers (in alliance with the monarchies) at that time. The idea that America is a Christian nation is revisionist history. The founders were, in large part, fierce individualists. Jefferson was atheist himself, and even went so far as to rewrite the bible, removing any claims of divinity and such mythology, titled "the faith and moral teachings of Jesus christ" or something to that effect.
The only thing we need to pray for is the day we can elect a president who can openly admit he doesnt believe in talking snakes.