YouTube subscribers is not a good measure of the reach, nor the social value, of a publication. YouTube is rife with crazy, conspiratorial, and provocative stuff, so you'd expect fringe outlets like InfoWars to do well there; people who like InfoWars are more likely to be active on YouTube than fans of CNN.

Most people view CNN through TV or CNN.com; I suspect a much greater proportion of InfoWars's content is viewed through YouTube.