The ascent of Bari Weiss, who Paramount announced on Monday will be editor-in-chief of CBS News, at first glance seems like a media story. But it’s really a story about American politics and the two major parties. There is a new kind of “moderate” Republican, perhaps best exemplified by Weiss. And this kind of Republican is poised to keep gaining power and shifting the country to the right in harmful and destructive ways, even if they never have the political power of more explicitly pro-Trump conservatives.