"Move on, Big Bird," insists a New York Post headline. It cites problems such as WNET's recent federal investigation, then launches into a more broad attack. "Once upon a time, the network’s slogan was: 'If PBS doesn’t do it, who will?' These days, the answer’s obvious: CNN, Fox, A&E . . ." It also asks, "Why the hell is government still in the TV business, anyway? And on such a grand scale?" and concludes that "public broadcasting is an anachronism."