Because not all government funding is federal funding. Random example from an NPR member station's web site: KCRW is supported, in part, by the Los Angeles

Because not all government funding is federal funding. Random example from an NPR member station's web site: KCRW is supported, in part, by the Los Angeles County Board of Supervisors through the Los Angeles County Department of Arts & Culture. The Department's Organizational Grant Program helps fund a wide variety of arts, culture, and music programs that you hear on air each day!